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Using ultra-low temperatures to understand high-temperature superconductivity

Using ultra-low temperatures to understand high-temperature superconductivity
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Institute Of Solid State Physics , Institute For Solid State Physics , Solid State Physics , நிறுவனம் ஆஃப் திட நிலை இயற்பியல் , நிறுவனம் க்கு திட நிலை இயற்பியல் , திட நிலை இயற்பியல் ,

How do good metals go bad?


Credit: TU Wien
We all have a clear picture in mind when we think of metals: We think of solid, unbreakable objects that conduct electricity and exhibit a typical metallic sheen. The behaviour of classical metals, for example their electrical conductivity, can be explained with well-known, well-tested physical theories.
But there are also more exotic metallic compounds that pose riddles: Some alloys are hard and brittle, special metal oxides can be transparent. There are even materials right at the border between metal and insulator: tiny changes in chemical composition turn the metal into an insulator - or vice versa. In such materials, metallic states with extremely poor electrical conductivity occur; these are referred to as bad metals . Until now, it seemed that these bad metals simply could not be explained with conventional theories. New measurements now show that these metals are not that bad after all. Upon closer inspection, their behaviour fits in perfectly ....

Andrej Pustogow , Institute For Solid State Physics , Solid State Physics , Chemistry Physics Materials Sciences , நிறுவனம் க்கு திட நிலை இயற்பியல் , திட நிலை இயற்பியல் , வேதியியல் இயற்பியல் பொருட்கள் அறிவியல் ,