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arXiv 1406.7299cond-mat.supr-concond-mat.mes-hall
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半导体中的光致超导

Photo-induced superconductivity in semiconductors

Garry Goldstein, Camille Aron, Claudio Chamon

摘要:

我们表明,光泵半导体可以表现出超导电性。我们说明了这种现象的情况下,两个波段的半导体隧道耦合到宽带水库和驱动的连续波激光。更实际地,我们还表明,超导性可以诱导在一个两个波段的半导体与一个广谱光源相互作用。我们还讨论了一个三带模型的情况下,其中的中间带取代宽带水库作为源的耗散。在所有这三种情况下,我们推导出的能带结构的简单条件,电子-电子相互作用,杂化水库,使超导性。我们计算了有限的超导能隙,并认为该机制可以通过吸引和排斥的相互作用,是强大的高温。

英文摘要:

We show that optically pumped semiconductors can exhibit superconductivity. We illustrate this phenomenon in the case of a two-band semiconductor tunnel-coupled to broad-band reservoirs and driven by a continuous wave laser. More realistically, we also show that superconductivity can be induced in a two-band semiconductor interacting with a broad-spectrum light source. We furthermore discuss the case of a three-band model in which the middle band replaces the broad-band reservoirs as the source of dissipation. In all three cases, we derive the simple conditions on the band structure, electron-electron interaction, and hybridization to the reservoirs that enable superconductivity. We compute the finite superconducting gap and argue that the mechanism can be induced through both attractive and repulsive interactions and is robust to high temperatures.

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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