Orbital-selective superconductivity in the nematic phase of FeSe

被引：26

作者：

Hu, Haoyu ^{[1
]}

Emilian, Rong ^{[2
,3
]}

Nica, Emilian M. ^{[4
]}

Zhu, Jian-Xin ^{[5
,6
]}

Si, Qimiao ^{[1
]}

机构：

[1] Rice Univ, Ctr Quantum Mat, Dept Phys & Astron, Houston, TX 77005 USA

[2] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China

[3] Renmin Univ China, Beijing Key Lab Optoelect Funct Mat & Micronano D, Beijing 100872, Peoples R China

[4] Arizona State Univ, Dept Phys, Box 871504, Tempe, AZ 85287 USA

[5] Los Alamos Natl Lab, Theoret Div, Los Alamos, NM 87545 USA

[6] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW B | 2018年 / 98卷 / 22期

基金：

美国国家科学基金会;

关键词：

65; K; IRON;

D O I：

10.1103/PhysRevB.98.220503

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The interplay between electronic orders and superconductivity is central to the physics of unconventional superconductors, and is particularly pronounced in the iron-based superconductors. Motivated by recent experiments on FeSe, we study the superconducting pairing in its nematic phase in a multiorbital model with frustrated spin-exchange interactions. Electron correlations in the presence of nematic order give rise to an enhanced orbital selectivity in the superconducting pairing amplitudes. This orbital-selective pairing produces a large gap anisotropy on the Fermi surface. Our results naturally explain the striking experimental observations, and shed light on the unconventional superconductivity of correlated electron systems in general.

引用

页数：5

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