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arXiv 2402.02747cond-mat.supr-concond-mat.mes-hall
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混合激子/超导体系统中具有有限能量库珀配对的凝聚体的涌现

Emergence of a condensate with finite-energy Cooper pairing in hybrid exciton/superconductor systems

Viktoriia Kornich

AI总结:

本研究理论探究双谷激子与超导近邻效应结合的系统,发现不同谷导带价带电子间形成含奇偶频贡献的有限能量谷间库珀配对,且存在向其宏观凝聚体转变的相变并给出希格斯模特性。

摘要:

我们从理论上研究了一种由两个能谷中形成的激子构成的装置,其具有导带和价带中互不相同的近邻诱导库珀配对。由于库仑相互作用与超导近邻效应的结合,来自不同能谷的导带和价带电子之间形成了库珀配对。这种有限能量谷间库珀配对同时包含偶频和奇频贡献。我们证明存在向此类库珀对的稳定宏观凝聚体形成的相变,并给出了对应希格斯模的特性。

英文摘要:

We study theoretically a setup consisting of excitons formed in two valleys, with proximity-induced Cooper pairing, different in the conduction and valence bands. Due to the combination of a Coulomb interaction with superconducting proximity effects, Cooper pairing between electrons from conduction and valence bands from different valleys is formed. This finite-energy intervalley Cooper pairing has both even- and odd-frequency contributions. We show that there is a phase transition into the formation of a robust macroscopic condensate of such Cooper pairs and present characteristics of the corresponding Higgs modes.

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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