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Origin of correlated isolated flat bands in LK99

arxiv.org

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Re: Origin of correlated isolated flat bands in LK99

#121

Post by aitchnyu »

yetihehe wrote: post #115
Culonavirus wrote: post #103

Earlier quoted context omitted.

Sooo, a 770 GHz processor? Do I understand it correctly? Jesus.

If using that flip-flop, whole processor will be closer to 100ghz (typically there are multiple transistors which need to stabilise before you have a result of computation). But probably those superconductors could enable even faster transistors and maybe we could get 1THz processors.

Like IDE ribbon cables gave way to sleek SATA cables, we could have another parallel to serial transition from silicon multicore crap to superconducting single core.

Re: Origin of correlated isolated flat bands in LK99

#122

Post by doingtheiroming »

Hermitian909 wrote: post #116
KRAKRISMOTT wrote: post #62

Earlier quoted context omitted.

What are all the material science ML companies doing? This would be a perfect technology demo if they can find the target

I've worked on the CS side of new material discovery. The tricky thing is that you don't actually have that much data so ML is not even close to plug and play. If you want to get results you end up needing to pair ML with a lot of theory and some tricky algorithms to help narrow the search space and even then that space is huge . Progress is being made but I think we're still at least 5-10 years from CS providing a r…

The positive view here is that we are 5-10 years from being able to search for materials computationally using AI. That would potentially be more valuable than a single RTS.

Re: Origin of correlated isolated flat bands in LK99

#123

Post by konschubert »

raziel2701 wrote: post #10

Man, I'm feeling stronger about LK-99 being it. This paper is theoretical and she finds that particular Cu substitutions onto specific Pb atomic sites are key to enabling a band structure that is usually linked to high Tc superconductors. What this means for the more practical minded is that the synthesis of superconducting LK-99 is not trivial and you need to make the appropriate substitutional alloy for this to wor…

I’m reminded how after every LHC result, a million theoretical papers come out that are able to provide a theory which explains it.

Is the solid state theory space similarly underdefined that you can find a theory for every result? Or is this paper significant?

Re: Origin of correlated isolated flat bands in LK99

#124

Post by wiz21c »

Dumb question: why all the fuss ? I have checked a bit on the web but I fail to grasp the practical consequences of it (I mean if LK99 is the thing)). Could someone explain what could be done with that material ?

For example, if we can transport electricity with a super conductor over long dsitances (1000 of kms), then what happens ? Is it just an incremental progress or is it a huge breakthrough ?

(I am not much trained in physics)

Re: Origin of correlated isolated flat bands in LK99

#125

Post by jacquesm »

aitchnyu wrote: post #121
yetihehe wrote: post #115

Earlier quoted context omitted.

If using that flip-flop, whole processor will be closer to 100ghz (typically there are multiple transistors which need to stabilise before you have a result of computation). But probably those superconductors could enable even faster transistors and maybe we could get 1THz processors.

Like IDE ribbon cables gave way to sleek SATA cables, we could have another parallel to serial transition from silicon multicore crap to superconducting single core.

No, you'll get superconducting multicore because all that will happen is that the bloat will expand to consume the new cycle budget. This has already happened many times.

Re: Origin of correlated isolated flat bands in LK99

#126

Post by jacquesm »

wiz21c wrote: post #124

Dumb question: why all the fuss ? I have checked a bit on the web but I fail to grasp the practical consequences of it (I mean if LK99 is the thing)). Could someone explain what could be done with that material ? For example, if we can transport electricity with a super conductor over long dsitances (1000 of kms), then what happens ? Is it just an incremental progress or is it a huge breakthrough ? (I am not much tra…

This has been covered in every thread about this stuff so far, maybe read those other threads first and then be more specific?

Re: Origin of correlated isolated flat bands in LK99

#127

Post by 0xB31B1B »

wiz21c wrote: post #124

Dumb question: why all the fuss ? I have checked a bit on the web but I fail to grasp the practical consequences of it (I mean if LK99 is the thing)). Could someone explain what could be done with that material ? For example, if we can transport electricity with a super conductor over long dsitances (1000 of kms), then what happens ? Is it just an incremental progress or is it a huge breakthrough ? (I am not much tra…

Huge breakthrough.

Energy efficiency is just one gain. This also potentially unlocks major gains in quantum computing, fusion energy, tradition computer chip design allowing another 30 years of moore’s law, batteries with zero energy loss leading to ultra dense batteries and electric aviation

Re: Origin of correlated isolated flat bands in LK99

#128

Post by wiz21c »

jacquesm wrote: post #126
wiz21c wrote: post #124

Dumb question: why all the fuss ? I have checked a bit on the web but I fail to grasp the practical consequences of it (I mean if LK99 is the thing)). Could someone explain what could be done with that material ? For example, if we can transport electricity with a super conductor over long dsitances (1000 of kms), then what happens ? Is it just an incremental progress or is it a huge breakthrough ? (I am not much tra…

This has been covered in every thread about this stuff so far, maybe read those other threads first and then be more specific?

I admit I didn't read all the threads in detail. I'll give it another try :-)

Re: Origin of correlated isolated flat bands in LK99

#129

Post by nine_k »

u320 wrote: post #106
losteric wrote: post #26

Earlier quoted context omitted.

Posting for Cunningham's law :) * Green energy suddenly becomes way more viable. Megaprojects in the most efficient sites can send energy long-distance and store it with effectively no loss, somewhat mitigating regional variations (especially if we have a high-trust world order where a united global grid is viable). (I read LK99 might have some limitations carrying lots of current but presumably other approaches woul…

Transmission losses aren't really a big problem for the grid. Cost, geopolitics, and resiliency matters more. I don't expect superconductors to change much here.

Transmission losses are a concern because they require building huge, very high-voltage structures.

Superconductors could make transmission lines much more compact, sturdy, weatherproof, and less vulnerable to sabotage. You could run a thick armored cable instead of a set of open-air wires on tall towers.

Re: Origin of correlated isolated flat bands in LK99

#130

Post by threeseed »

wiz21c wrote: post #124

Dumb question: why all the fuss ? I have checked a bit on the web but I fail to grasp the practical consequences of it (I mean if LK99 is the thing)). Could someone explain what could be done with that material ? For example, if we can transport electricity with a super conductor over long dsitances (1000 of kms), then what happens ? Is it just an incremental progress or is it a huge breakthrough ? (I am not much tra…

One high-level, back of napkin example that gets thrown around is that the world would magically get 40% more power due to reduction in transmission losses. The world spends $6,000b a year on energy purposes.

So a $2,400b/year opportunity. And that's just from transmission let alone the many other things it can do.

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