The Gor'kov and Melik‐Barkhudarov Correction to the Mean‐Field Critical Field Transition to Fulde–Ferrell–Larkin–Ovchinnikov States,Annalen Der Physik

当前位置： X-MOL 学术 › Ann. Phys. (Berlin) › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

The Gor'kov and Melik‐Barkhudarov Correction to the Mean‐Field Critical Field Transition to Fulde–Ferrell–Larkin–Ovchinnikov States
Annalen Der Physik ( IF 2.2 ) Pub Date : 2020-08-19 , DOI: 10.1002/andp.202000222
Heron Caldas ₁ , Qijin Chen ₂

Affiliation

The Fulde–Ferrell–Larkin–Ovchinnikov (FFLO) states, characterized by Cooper pairs condensed at finite‐momentum are, at the same time, exotic and elusive. It is partially due to the fact that the FFLO states allow superconductivity to survive even in strong magnetic fields at the mean‐field level. The effects of induced interactions at zero temperature are calculated in both clean and dirty cases, and it is found that the critical field at which the quantum phase transition to an FFLO state occurs at the mean‐field level is strongly suppressed in imbalanced Fermi gases. This strongly shrinks the phase space region where the FFLO state is unstable and more exotic ground state is to be found. In the presence of high level impurities, this shrinkage may destroy the FFLO state completely.

中文翻译：

Gor'kov和Melik-Barkhudarov校正到向Fulde-Ferrell-Larkin-Ovchinnikov态的平均场临界场过渡

以有限动量凝聚的库珀对为特征的富勒—费雷尔—拉肯—奥奇尼科夫（FFLO）状态同时是奇异的和难以捉摸的。部分原因是FFLO状态允许超导即使在平均磁场水平的强磁场中也能幸存。在干净和肮脏的情况下，都可以计算出零温度下感应相互作用的影响，并且发现在不平衡费米气体中，在平均场水平发生量子相转变为FFLO状态的临界场受到了强烈抑制。这极大地缩小了FFLO状态不稳定且将发现更奇异的基态的相空间区域。在高含量杂质的存在下，这种收缩可能会完全破坏FFLO状态。

更新日期：2020-10-11

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11