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A comment on LK99: Team of Southeast University observed zero resistance below 110 K. Parent comment

Re:LK99: Team of Southeast University observed zero resistan... by dv_dt on Wednesday August 02, 2023 @04:48PM (#36977175)
“Purity” is a really overloaded term here. There are vast set of material properties that simply don’t map to a definition “purity” as in some homogeneous concentration of a material. This is so early no one likely knows exactly what configuration of material to “purify” for the intended outcome.

There will likely be years of not decades of looking at differences in the materials and performance of related materials to more fully explore this discovery.

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Re:LK99: Team of Southeast University observed zero resistan... by jacquesm on Wednesday August 02, 2023 @05:09PM (#36977509)
Yes, true, let me unpack that then:

- purity as in the sample is uniformly constructed of the right atoms but they are not in the right configuration

vs

- purity as in the sample contains atoms that shouldn't be there in the first place

and finally

- purity as in: the sample that purportedly did show room temperature superconductivity turns out to be the impure one and that impurity is so poorly understood that we currently can not replicate it accurately, but a test by an independent lab of the sample would verify the properties as advertised.

All of these are possibles, and not mutually exclusive.

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Re:LK99: Team of Southeast University observed zero resistan... by trafficante on Wednesday August 02, 2023 @06:45PM (#36978854)
> purity as in the sample is uniformly constructed of the right atoms but they are not in the right configuration

The conclusions in the linked pdf suggest this may be the issue with LK99.

1. https://arxiv.org/abs/2307.16892

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