2006-11-13 07:41:41 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Physics
If you mean absolute zero, a quick look in the Handbook shows tungsten with a transition temperature of .0154 degrees Kelvin.
More people care about high temperature superconductivity, since we receive the benefits with less cooling expense. The highest I have from 1994 is 128 degrees K, Tl2Ba2Ca2Cu3O10. Most are ceramics of tellurium and bismuth.
2006-11-13 10:23:33 · answer #1 · answered by Frank N 7 · 1⤊ 0⤋
You need to be more specific in forming your questions.
Are you talking zero Kelvin, or zero Celsius? How much energy are you trying to use?
If it's Kelvin ... all superconducting materials will (theoretically) conduct down to zero. The limit on superconductivity is based on the MAXIMUM temperature achieved, not the minimum.
If it's Celsius ... different materials have different upper temperatures (high Kelvin = closer to zero Celsius). Some materials work better at lower temperatures - but have a wider conductivity capability. This means they can carry more current without raising the temperature to the non-linear region of superconductivity for that material.
Choose your parameters more carefully, and you will probably get a better answer.
2006-11-13 08:03:08 · answer #2 · answered by CanTexan 6 · 1⤊ 0⤋
Current record holder is superconducting up to 138 K, the compound is a very complex ceramic named cuprate perovskite (a compound of copper, calcium and titanium oxyde).
2006-11-13 07:56:55 · answer #3 · answered by Vincent G 7 · 1⤊ 0⤋
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2016-12-10 08:28:38 · answer #4 · answered by Anonymous · 0⤊ 0⤋