14 ms·
Electronic Structure of LK-99
- itsthecourier 3y agoSo theorically they agree with LK-99 reaching superconductivity?
- zeronullempty 3y agoMore specifically they agree with another similar paper from Stanford's Sinead Griffin https://arxiv.org/abs/2307.16892 https://arxiv.org/abs/2307.16892
- raziel2701 3y agoBerkeley's Sinead Griffin.
- zeronullempty 3y agoWhoops!
- jsnk 3y agoI think she's working in a UC Berkeley Lab
- dekhn 3y agoNo, Lawrence Berkeley National Lab, which is Up the Hill from Berkeley. They're run by the same underlying organization but are distinct (yet overlapping in many ways). LBL evolved out of the UC Berkeley Rad Lab, run by Earnest O. Lawrence (same name as the current lab). They do non-classified research. There is also Lawrence Livermore National Lab, which is nearby, but in Livermore. They do classified research in addition to non-classified. I suppose it's one of the two places they simulate nuclear weapons... errr, run large scale multi-physics combustion codes for stockpile stewardship.
- bcrosby95 3y ago> I suppose it's one of the two places they simulate nuclear weapons... errr, run large scale multi-physics combustion codes for stockpile stewardship. Back in the '90s my friend (jokingly) lamented that they wouldn't let him try to play Everquest on their computer.
- westurner 3y ago"Origin of correlated isolated flat bands in copper-substituted lead phosphate apatite" (2023) https://arxiv.org/abs/2307.16892 https://arxiv.org/abs/2307.16892 : > Abstract: A recent report of room temperature superconductivity at ambient pressure in Cu-substituted apatite (`LK99') has invigorated interest in the understanding of what materials and mechanisms can allow for high-temperature superconductivity. Here I perform density functional theory calculations on Cu-substituted lead phosphate apatite, identifying correlated isolated flat bands at the Fermi level, a common signature of high transition temperatures in already established families of superconductors. I elucidate the origins of these isolated bands as arising from a structural distortion induced by the Cu ions and a chiral charge density wave from the Pb lone pairs. These results suggest that a minimal two-band model can encompass much of the low-energy physics in this system. Finally, I discuss the implications of my results on possible superconductivity in Cu-doped apatite
- ayakang31415 3y agoI am a PhD student in Physics, but I am no expert in condensed matter physics (I do research in computational NMR). Based on my experience with theorists and simulation researcher, I am a bit concerned with anchoring bias and the speed at which simulation papers are being published here. Then again, I don't know exactly what kind of research steps they follow to do their research.
- deleted 3y ago[deleted]
- abnry 3y agoI don't know why anyone should be concerned about anything here, unless you want immediate confirmation. It's a process. Scientists will try to replicate and try to simulate and try to reason theoretically. They are bound to make mistakes but all of this can be critiqued and iterated on. Again, there's no problem unless you need immediate confirmation or you think chasing this idea is a waste of time. Enjoy the ride :)
- tnecniv 3y agoThere’s an old saying that “simulations are bound to succeed,” but also as an academic that has a working knowledge of statistical mechanics but is not a (condensed matter) physicist, from what I’ve read it seems folks are approaching this with healthy skepticism likely due to the drama around the development and release of the first paper. The simulation paper folks are talking about used what appeared to be an existing DFT simulation package. Now, DFT is an approximate theory used to render computation tractable, but to my understanding it is a popular and mature method. I was actually kind of impressed that they were able to reproduce results from the LK paper in simulation so quickly. While it’s possible the speed led to a bug or error in the analysis, simulations often don’t just magically work and can take a decent amount of parameter tuning — especially if the system being simulated has something tricky or exotic going on. The fact that they were able to get what appears to be an accurate simulation working quickly that also justifies the low yield rates has made me more cautiously optimistic than anything
- marricks 3y ago> If doped such an electronic structure [LK-99] might support flat-band superconductivity or an correlation-enhanced electron-phonon mechanism, whereas a diamagnet without superconductivity appears to be rather at odds with our results. Sounds like it, if prepared right it could be a super conductor and would NOT be a diamagnet that would display the properties we saw in those videos.
- galleywest200 3y agoThis could also explain why the original authors themselves say they can only make it successfully around 1/10 times. The stars need to align.
- appplication 3y agoDo you have a source for the original authors making a statement on that?
- tnecniv 3y agoThat’s not unsurprising when it comes to a lot of research. The bench scientists I know often struggle with yield rates and labs have special knowledge about their particular set up when it comes to getting stuff to work. Even in robotics (my area), if you are watching a video of a robot doing something cool, there’s often a bunch of times they ran the same demo and it didn’t work for some (often largely irrelevant to the main idea) reason. I also remember, in an undergrad analog circuits class, we had to build an amplifier on a breadboard with certain performance specs (e.g., a fairly high cut off frequency, etc.). This ended up being fairly difficult due to the tolerances in the components to which we had access and breadboard parasitics. I recall getting a non-trivial performance boost by swapping out a dozen 2n2222’s until we found “a good one.” The gray beard professor laughed and said that’s an expected part of our practical education.
- thowieru2342343 3y agoHail real-world, the destroyer of theory-nerd arrogance.
- dekhn 3y agoyes, but if you reported 100 different substances reaching superconductivity, 100 theorists will publish papers demonstrating their model supports the observation... regardless of whether those substances actually reach superconductivity. (put another way: it's post-hoc)
- rsfern 3y agoSure it’s post hoc, but these are ab initio calculations, there’s not all that much wiggle room that you could make anything you like come out looking like a superconductor. Plus now I’ve seen three calculations with three different functionals and reasonable convergence criteria and they all find similar electronic structure
- dekhn 3y agoWell, then why spend all this time searching in a lab? Instead, run a bunch of simulations until the compounds with properties you desire just sort of pop out as the top hits in your simulations? (I say this as somebody with a decade+ of experience running large ensembles of classical MD simulations, but not so much experience with inorganic DFT)
- ayakang31415 3y agoIf you run a bunch of simulations to brute-force-find what you're looking for, you run into a problem of infinitely many things to simulate. It is better to use domain knowledge to eliminate things that don't work and narrow down things that would have high chance of working in theory to give some sort of directional guidance for your research.
- dekhn 3y agoThat domain knowledge wouldn't have suggested exploring this space for superconductivity. Turn the material science problem around: instead of looking for a substance that has a specific property, look at many substances until small amounts of any interesting property (young's modulus, etc) show up. By looking for "anything interesting" you are more likely to find something of interesting (ideally, several somethings). And then you also know a starting place to begin optimiziation. (I'm not saying these things out of ignorance; this technique has worked well for me at times when I had exceptionally large amounts of CPU available to me, and it's also worked well in the drug industry, which has similar problems to material science.)
- marcosdumay 3y agoKeep in mind that a theoretical model agreeing with possible superconductivity is a pretty weak signal. Even more a DFT one. Real models for superconductivity take a lot of work to create, it's not something people do for an unverified material, and it's not something you get out of DFT. That paper's agreement is more on the lines of "yeah, all superconductors are grey, and this thing is grey, it can be." But then, they talked about diamagnetism (graphite-like one, I imagine). Honestly, I have no idea how one could disprove (graphite-like) diamagnetism with that simulation, but disproving it is really good news.
- dudeinjapan 3y agoIf the results don’t match the theory, change the results!
- seewhydee 3y agoThey theoretically agree that the material's properties could be nice for making some kind of superconductor, but present no clear indication that it would/should be a room temperature superconductor. The critical temperature depends on stuff that can't be probed via such simulations (i.e., electron-electron interactions). From my understanding (I am not a superconductor person, but in an adjacent field), having flat bands at the Fermi level is not that rare. Such features appear in other materials that are evidently not superconductors, room temperature or otherwise. So the conclusions are more along the lines of "maybe it wouldn't be totally crazy", rather than "omg, we predict this material has astounding properties".
- cris007 3y agoI think that at least some parts of this material has superconductivity properties. That's why the videos shown have some very tiny speckles of the material showing the diamagnetism effects and just one anonymous video showing full levitation (type 2 superconductor property as I understood).
- bluecoconut 3y agoI got my PhD studying band structure of high-tc superconductors (experimentalist, ARPES). These Cu d-d interactions right at the fermi energy give me huge hope. Feels very familiar to other superconductors (re: all the cuprates). (Note: I specifically worked in a lab that was measuring a lot of the d-wave character / gap-energies of various superconductors) All in all, I'm now much more bullish on LK-99 being real superconductivity after seeing multiple different labs compute similar band structures. The video of multiple directions of magnet showing some levitation also inspires a lot of hope.
- anigbrowl 3y agoSo happy to hear this. I've been hoping for some sort of breakthrough ever since I first encountered footage of magnets falling through Cu tubes at an extremely leisurely pace.
- redrobein 3y agoAny conductive material for the tube will have a similar effect. It isn't specific to copper. The moving magnet induces a current in the tube which in turn creates the magnetic field that interacts with the magnet.
- soligern 3y agoEddy currents
- sjcsjc 3y ago“Eddies,” said Ford, “in the space-time continuum.” “Ah,” nodded Arthur, “is he? Is he?”
- TheSpiceIsLife 3y agoNot any conductive material, obviously won’t work won’t work, nor magnetic steel / stainless steel alloys.
- jeffbee 3y agoThe most interesting phenomenon revealed so far is that the room-temperature superconductor people and the generative-LLMs-are-God people draw on the same limited global pool of credulity, such that HN cannot be flooded with both ChatGPT worship and superconductor speculation at the same time.
- dekhn 3y agothe singularity isn't going to implement itself, you know.
- catchnear4321 3y agonot with that attitude it isn’t
- cantrevealname 3y agoThe next breakthrough we need is with fusion technology. With unlimited fusion energy, room temperature superconductivity, and (soon) artificial general intelligence, the singularity won't be long off.
- AS04 3y agoFusion would be massively boosted by having room-temperature superconductivity anyways.
- marcosdumay 3y agoWell, if there is a breakthrough that puts us closer to fusion, it's room-temperature superconductors.
- dekhn 3y agoYes, a combination of fusion, superconductivity, and AGI would indeed be transformative. It's hard to anticipate what the results would look like. Good reading: https://en.wikipedia.org/wiki/Post-scarcity https://en.wikipedia.org/wiki/Post-scarcity https://en.wikipedia.org/wiki/Kardashev_scale https://en.wikipedia.org/wiki/Kardashev_scale then follow it up with a bit of 1993, https://edoras.sdsu.edu/~vinge/misc/singularity.html https://edoras.sdsu.edu/~vinge/misc/singularity.html and https://web.pa.msu.edu/people/yang/RFeynman_plentySpace.pdf https://web.pa.msu.edu/people/yang/RFeynman_plentySpace.pdf (oh, huh, I just noticed that There's Plenty of Room at the Bottom starts with a reference to the discovery of superconduction)
- appplication 3y agoThis ongoing research saga pretty much the most excited I’ve been about anything since before Covid. It feels like the science equivalent of watching your favorite sports team on an epic rise towards winning a world championship. Even if this turns out to flop, I hope history remembers the original authors favorably. They really did find something that by all accounts could plausibly be a room temp superconductor. And of course this seems to have turned over quite a stone. Peripheral research as a result of this will likely continue for years, even if superconductivity is disproven.
- dekhn 3y agoPons & Fleischman was exciting for about 3 days. Some folks kept looking for decades after.
- hliyan 3y agoI felt like it lasted much longer. Of course, this was pre Internet days, so I read it in papers and watched on TV
- poopbutt7 3y ago[flagged]
- cthalupa 3y agoCF wasn't something that was possible under our understanding of physics at the time. Room temp ambient pressure superconductors are perfectly possible under our understanding of physics. Comparing the two is silly.
- jacquesm 3y agoSuper conductors exist. Room temperature net out fusion does not exist, and may never exist, and there are no known pathways in physics that would lead to it. Super conductors do not require any new physics, they require a material that may or may not exist but given the steady progression in the temperature range over which superconductivity has been observed there is a good chance that it exists, we just haven't found it yet. Note that the 'room temperature' thing is a human requirement, and not one grounded in physics of conductivity per se, and that we started around 3 Kelvin (or -270 degrees Celsius) https://www.scientificamerican.com/article/superconductors-turn-100/ https://www.scientificamerican.com/article/superconductors-t... To 200K or -70 Celsius) degrees for the latest confirmed superconductor: https://physicsworld.com/a/hydrogen-sulphide-is-warmest-ever-superconductor-at-203-k/ https://physicsworld.com/a/hydrogen-sulphide-is-warmest-ever... In about 100 years. That is on average a two degree per year increase over that period. But the rate of improvement isn't linear and the closer you get to zero the bigger the market is and so the larger the amount of funding available to search for the bit that will close the gap. This is why we will likely have room temperature superconductors somewhere in the near future, assuming it doesn't already exist. Obviously there is no guarantee that anything that hasn't been discovered yet exists. But in this case, given the arbitrariness of the boundaries set and the fact that those are mostly dictated by chance conditions on planet Earth (if we were living on the dark side of the moon we'd already have room temperature superconductivity...).
- nemo44x 3y ago2023 will go down as a miracle year not unlike 1905. Between AI, this, and… what’s next?
- oceanplexian 3y agoThere's technically still time for Starship to have a go at another test flight, so there's still time to add "Cheap reusable access to space" to "proto-AGI" and "RT Superconductors".
- mrleinad 3y agoNext is that UFOs are real
- DoreenMichele 3y agoUnidentified Flying Objects are absolutely real, though the newer cool kid term is UAP. (From the internet: UAP stands for "unidentified anomalous phenomena.") It's flying saucers carrying aliens from another planet that's controversial and up for debate.
- 1over137 3y ago>It's flying saucers carrying aliens from another planet that's controversial and up for debate. Which is what "UFO" means to 99% of people.
- DoreenMichele 3y agoI hate seeing it used that way on HN though because it actively undermines meaty discussion of objective data and promotes the treatment of articles about objective data as click-bait, like it's the "hot sheets" of Men in Black -- like HN is a place to take seriously the wildest conspiracy theories with no real basis.
- themoonisachees 3y agoBut it's not what it means to the united states government when it announced it had seen UFOs, which is the point of discussion
- dralley 3y agoMy understanding is that the "99" in LK-99 is the year it they first synthesized the material, i.e. 1999. Assuming this is all true, why is it just now coming to light? Did they just not know what they had? (I have not been following this closely, maybe this has already been explained)
- erulabs 3y agoI’m very much a layman, but my understanding is that LK-99 itself is not necessarily a superconductor. It’s polycrystalline which means it’s a very uneven material - not all LK-99 is the same. They both didn’t know it was what it was and also couldn’t nail down the procedure for consistently making it so that it has the superconductor properties. It took a long time to get the resources required to investigate this far - the scientists had their own lives and careers and didn’t get back to this particular investigation until recently.
- jvm___ 3y agoUniformed opinion. It takes a week to bake/whatever a test sample. Which is why this is playing out so "slowly". So, they had an idea and have been baking/testing/refining samples for decades. Science and funding takes a while. What idea they started with and why they kept at it for 20 years is beyond me, that's a long time to chase an idea of you didn't have results or a hint that your idea would work. Maybe they had a weird sample that came from some other process in 1999 and have spent the intermediate time convincing funding people and doing the repetitive lab work required to get it to this point.
- mptest 3y agoSpeaks to a supreme confidence in the theory, surely? I'm a layman but imagine everyone is going to want to hear every wild idea these guys could think up if this works out. They might have been sitting on this for 20 years? Probably why I'm not, but If I were any vc person I'd be busting down their door trying to give them all my money
- yetihehe 3y ago
- UberFly 3y agoSeveral commenters here have mentioned demonstration videos. Does anyone have a link(s) to these? Many thanks.
- calgarymicro 3y agoTry the sources column in this[0] table. You can expand the notes for each entry to read more. There's also this one[1] that's on the front page right now, though its provenance is questionable. [0]https://forums.spacebattles.com/threads/claims-of-room-temperature-and-ambient-pressure-superconductor.1106083/post-94266395 https://forums.spacebattles.com/threads/claims-of-room-tempe... [1]https://news.ycombinator.com/item?id=36964107 https://news.ycombinator.com/item?id=36964107
- UberFly 3y agoThank you for the reply. This is helpful.
- djangelic 3y agoI believe this blog post has a breakdown of all the updates and the twitter posts with the videos: https://eirifu.wordpress.com/2023/07/30/lk-99-superconductor-summary/ https://eirifu.wordpress.com/2023/07/30/lk-99-superconductor...
- westurner 3y ago"Electronic structure of the putative room-temperature superconductor [ Pb_9 Cu( PO_4)_6 O ]" (2023) https://arxiv.org/abs/2308.00676 https://arxiv.org/abs/2308.00676 : > A recent paper [Lee {\em et al.}, J. Korean Cryt. Growth Cryst. Techn. {\bf 33}, 61 (2023)] provides some experimental indications that Pb10−xCux(PO4)6O with x≈1, coined LK-99, might be a room-temperature superconductor at ambient pressure. Our density-functional theory calculations show lattice parameters and a volume contraction with x -- very similar to experiment. The DFT electronic structure shows Cu2+ in a 3d9 configuration with two extremely flat Cu bands crossing the Fermi energy. This puts Pb9Cu(PO4)6O in an ultra-correlated regime and suggests that, without doping, it is a Mott or charge transfer insulator. If doped such an electronic structure might support flat-band superconductivity or an correlation-enhanced electron-phonon mechanism, whereas a diamagnet without superconductivity appears to be rather at odds with our results. Superconductivity: https://en.wikipedia.org/wiki/Superconductivity https://en.wikipedia.org/wiki/Superconductivity Superconductor classification: https://en.wikipedia.org/wiki/Superconductor_classification https://en.wikipedia.org/wiki/Superconductor_classification Room-temperature superconductor: https://en.wikipedia.org/wiki/Room-temperature_superconductor https://en.wikipedia.org/wiki/Room-temperature_superconducto... Diamagnetism: https://en.wikipedia.org/wiki/Diamagnetism https://en.wikipedia.org/wiki/Diamagnetism
- carabiner 3y agoMore DFT? Haven't we concluded that has little predictive power?
- chc4 3y agoMore people saying it sounds feasibly like it could be a superconductor is great, but agreed - https://nitter.net/MichaelSFuhrer/status/1686267690770739200 https://nitter.net/MichaelSFuhrer/status/1686267690770739200 and similar threads by actual experts in the field have outlined that DFT studies ignore a lot of variables that need to line up for superconductivity, in harsh contrast to techbros on Twitter claiming they're proof of the next thousand year golden era.
- carabiner 3y agoYeah the techbros have been the worst. Coffee guy went from saying the first DFT paper should deserve a Nobel to, "it's not a strong signal of anything" in 12 hours. WTF. All the actual scientists have been rock steady at, "it is probably not going to replicate," especially CMTC. Techbro speculation on physics should be considered harmful.
- objektif 3y agoCMTC comes of as a whiny little POS tbh. They have the exact opposite of the attitude I would have expected from a scientist. In their first thread regarding this topic they were almost flat out belittling the og authors. WTF.
- selimthegrim 3y agoBecause CMTC has high theory standards and the authors, to put it charitably, didn’t
- objektif 3y agoThis is the one from the all infamous University of Maryland correct? lol.
- lea900 3y ago[flagged]
- NotSuspicious 3y agoOne of the things that has most pissed me off about these papers is that VASP is proprietary and requires a license to use.
- montecarl 3y agoSome context on VASP from someone who worked with it for about 10 years. VASP is a very common projector augmented wave (PAW) planewave DFT program in the solid state physics/chemistry community. I used it for about 10 years when I was doing computational chemistry. It is distributed as a tarball of FORTRAN90 files, so in some sense all researchers that use it have access to the source code. The research group I was in maintained a set of patches against the source code to implement additional functionality for transition state searches (useful for modeling solid state reactions). Opensource alternatives exist, but are not as widely accepted (or somehow as fast in my experience). GPAW[1] is one example. It is unfortunate that it is not an opensource program, however, among the large community of scientist with access to the software the source code is available and is well understood and accepted. It is more or less the defacto standard against which other solid state DFT programs are tested. [1] https://wiki.fysik.dtu.dk/gpaw https://wiki.fysik.dtu.dk/gpaw
- DC-3 3y agoFor anyone else totally clueless about chemistry: According to Wikipedia DFT in this context stands for 'Density-functional theory' and not 'Discrete Fourier Transform' as I assumed given the references to waves.
- stabbles 3y agoHow about Quantum Espresso [1] and CP2K [2]? They're both open source [1] https://www.quantum-espresso.org/ https://www.quantum-espresso.org/ [2] https://www.cp2k.org/ https://www.cp2k.org/
- qiqitori 3y agoThe material containing lead is very unfortunate. I have no doubts that (if it indeed turns out to be a superconductor) humans will use it anyway in any context where it provides even a slight benefit (cf. just in the lead department: leaded gasoline, leaded solder, etc.).
- dudeinjapan 3y agoOnce room temp superconductivity is shown to be possible, I bet we’ll find non-lead materials that can do it too.
- redox99 3y agoLead solder is mostly ok. Arguably lead free solder has been much more damaging for the environment because of all the e-waste it created.
- qiqitori 3y ago> lead free solder has been much more damaging for the environment because of all the e-waste it created. We're getting quite off-topic here (I guess I should have used different examples), but I would be interested where you got that information from. Most consumer electronics devices do not break prematurely, and especially not due to soldering issues. Source: I buy most electronics second-hand, I regularly repair electronics RoHS and not RoHS, I use lead-free solder and occasionally leaded solder, I watch a bunch of Youtube videos by other people who repair a bunch of electronics, just for fun. (You'll always (and easily) find someone who knows more than me, and it's entirely possible that you do.) Most consumer electronics devices are retired because their owners got something shinier, or if "broken", it's the battery, display, or some important connector. If something is "actually" broken, it's usually due to power ICs, capacitors, fuses. (You could of course argue that some broken connectors are a case of a soldering issue, but yeah, it's not like I haven't seen broken connectors that were actually soldered using leaded solder, so things can get kind of muddy there)
- scrlk 3y agoBack in the 00s, the transition to lead free solder was blamed for the high failure rate of BGA packages found in consoles and GPUs. One of the theories at the time was that the poor thermal design of these devices (the most notable example being the Xbox 360) lead to cracks in the solder balls after repeated thermal cycling.
- arookery 3y agoSuper exciting moment, seeing scientists actively exploring the superconducting properties of LK-99.
- chaorew 3y agooh, I don't believe it. At present, it is very likely that it is purely theoretical, and there is still a long time before it can be applied.
- samhuk 3y agoMy ultimate take-away about LK-99 since the start has been that, even if it doesn't turn out to be a holy-grail or whatever, the novel ideas behind the material are incredibly interesting. The idea of causing tiny (~0.5%) crystal lattice shrinkage with cuprate percolation is a really interesting idea. So far, only huge pressures or very low temperatures (i.e. Physics) have been used to cause that shrinkage, therefore perhaps LK-99 could, at the least, mark the time that Physicists hold up their hands, admit that they have failed, and let the Chemists give it a shot. I'm slightly oversimplifying the situation, of course, and the disciplines of science cannot be so distinctly separated, but, y'know.
- jhrmnn 3y agoCondensed matter physics and materials chemistry certainly become inseparable in certain areas
- samhuk 3y agoIndeed. The separation between "Chemistry" and "Physics" completely breaks down when you start dealing with electron behaviours. I've actually got a little tin-foil-hat pet theory that Chemistry is slowly dying as it approaches "completion" of its roots (macroscopic phenomena of matter), and is gradually being subsumed by Physics. To at least a silly layman like me, lots of bleeding-edge Chemistry nowadays reads like your average Physics, e.g. doing quantum simulations for protein folding, superconductors, etc. I'm probably just being silly though, right?
- mensetmanusman 3y agoChemistry has a ton of unsolved problems that are almost unbounded. The big fun one is trying to create the complete graph network of useful chemical reactions so that we can find paths of higher efficiency when making certain molecules. This compute hard problem will take the world’s chemist to collaborate on a large scale because they don’t have a great database built yet that can enable this.
- xorbax 3y ago
- lucideer 3y agoFor anyone interested in this topic, there's a thread on Twitter that's been garnering some attention: https://nitter.net/Errorreporrt/status/1685835688216821760 https://nitter.net/Errorreporrt/status/1685835688216821760
- sampo 3y ago> a thread on Twitter If you are not logged in to Twitter, Twitter doesn't show the thread, just the first post alone. But you can use nitter.net, if you don't want to log in to Twitter: https://nitter.net/Errorreporrt/status/1685835688216821760 https://nitter.net/Errorreporrt/status/1685835688216821760
- lucideer 3y agoThank you! Edited & will try use in future.
- yreg 3y agoCould we please stop giving attention to the obnoxious anonymous Russian troll who's only proof is a photo of a spec of dust in a syringe, who says she 'didnt follow the paper beause she immediately invented a better way to make a room temp superconductor', who says she 'doesnt care about superconductors' and keeps tweeting USSR propaganda? I really don't get how she keeps getting recommended in these hacker news threads as an interesting source.
- lucideer 3y agoNot sure if you're implying she's cooked up a few crucibles at home purely for internet attention (nor what the relevance of her political views are here), but regardless the thread is interesting either way as it's generating lot of general interest in replication. This is perhaps a better link: https://eirifu.wordpress.com/2023/07/30/lk-99-superconductor-summary/#sbtable https://eirifu.wordpress.com/2023/07/30/lk-99-superconductor...
- yreg 3y ago