Unified minimum effective model of magnetic properties of iron-based superconductors

被引：56

作者：

Hu, Jiangping ^{[1
,2
,3
]}

Xu, Bao ^{[1
,2
]}

Liu, Wuming ^{[1
,2
]}

Hao, Ning-Ning ^{[1
,2
]}

Wang, Yupeng ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[3] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 14期

关键词：

EXCHANGE INTERACTIONS; SPIN-WAVES; ORDER;

D O I：

10.1103/PhysRevB.85.144403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Iron-based superconductors exhibit many different antiferromagnetically ordered ground states. We construct a minimum effective magnetic model that displays all magnetic phases. This model also captures three incommensurate magnetic phases as well, two of which have been observed experimentally. The model characterizes the nature of phase transitions between the different magnetic phases and explains a variety of magnetic properties, such as spin-wave spectra and electronic nematism. Most importantly, by unifying the understanding of magnetism, we cast insight on the key ingredients of magnetic interactions that are critical to the occurrence of superconductivity.

引用

页数：12

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