Communal pairing in spin-imbalanced Fermi gases

被引：2

作者：

Foo, D. C. W. ^{[1
]}

Whitehead, T. M. ^{[1
]}

Conduit, G. J. ^{[1
]}

机构：

[1] Cavendish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England

来源：

EPL | 2019年 / 126卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

CRITICAL FIELD; SUPERCONDUCTIVITY; WAVE;

D O I：

10.1209/0295-5075/126/67003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A spin-imbalanced Fermi gas with an attractive contact interaction forms a superconducting state whose underlying components are superpositions of Cooper pairs that share minority-spin fermions. This superconducting state includes correlations between all available fermions, making it energetically favorable to the Fulde-Ferrell-Larkin-Ovchinnikov superconducting state. The ratio of the number of up-and down-spin fermions in the instability is set by the ratio of the up-and down-spin density of states in momentum at the Fermi surfaces, to fully utilize the accessible fermions. We present analytical and complementary Diffusion Monte Carlo results for the state. Copyright (C) EPLA, 2019

引用

页数：7

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