Magneto-orbital coupling in iron pnictides

被引：1

作者：

Ghosh, Sayandip ^{[1
]}

Raghuvanshi, Nimisha ^{[1
]}

Singh, Avinash ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2016年 / 405卷

关键词：

Iron pnictides; Multi-orbital model; SDW state; SUPERCONDUCTIVITY; ANISOTROPY; PHASE; ORDER;

D O I：

10.1016/j.jmmm.2016.01.015

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A magneto-orbital coupling mechanism is proposed to account for the weak energy gap at the Fermi energy in the (pi, 0) ordered SDW state of a realistic three-orbital model for iron pnictides involving d(xz), d(yz), and d(xy) Fe orbitals. The orbital mixing terms between the d(xy) and d(xz)/d(yz) orbitals, which are important in reproducing the orbital composition of the elliptical electron pockets at (+/- pi, 0) and (0, +/- pi), are shown to play a key role in the energy gap formation in the SDW state. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：264 / 269

页数：6

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