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arXiv 0810.3862cond-mat.str-elcond-mat.supr-con
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掺杂莫特绝缘体的库珀对不稳定性

Generalizing the Cooper-Pair Instability to Doped Mott Insulators

Mike Guidry, Yang Sun, Cheng-Li Wu

摘要:

铜氧化物在掺杂电子空穴后迅速成为超导体,表明基本的配对不稳定性。库珀机制将正常超导解释为费米液体状态的不稳定性,但高温超导体来自莫特绝缘体正常状态,而不是费米液体。我们发现,早熟对凝聚掺杂是一个自然的属性竞争的反铁磁性和d-波超导的单占据晶格,从而推广库珀不稳定性掺杂莫特绝缘体,具有重要意义的高温超导机制。

英文摘要:

Copper oxides become superconductors rapidly upon doping with electron holes, suggesting a fundamental pairing instability. The Cooper mechanism explains normal superconductivity as an instability of a fermi-liquid state, but high-temperature superconductors derive from a Mott-insulator normal state, not a fermi liquid. We show that precocity to pair condensation with doping is a natural property of competing antiferromagnetism and d-wave superconductivity on a singly-occupied lattice, thus generalizing the Cooper instability to doped Mott insulators, with significant implications for the high-temperature superconducting mechanism.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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