Coexistence of Half-Metallic Itinerant Ferromagnetism with Local-Moment Antiferromagnetism in Ba0.60K0.40Mn2As2

被引：31

作者：

Pandey, Abhishek ^{[1
,2
]}

Ueland, B. G. ^{[1
,2
]}

Yeninas, S. ^{[1
,2
]}

Kreyssig, A. ^{[1
,2
]}

Sapkota, A. ^{[1
,2
]}

Zhao, Yang ^{[3
,4
]}

Helton, J. S. ^{[3
]}

Lynn, J. W. ^{[3
]}

McQueeney, R. J. ^{[1
,2
]}

Furukawa, Y. ^{[1
,2
]}

Goldman, A. I. ^{[1
,2
]}

Johnston, D. C. ^{[1
,2
]}

机构：

[1] Iowa State Univ, Ames Lab, Ames, IA 50011 USA

[2] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[3] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA

[4] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 04期

关键词：

HIGH-TEMPERATURE SUPERCONDUCTIVITY; IRON;

D O I：

10.1103/PhysRevLett.111.047001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetization, nuclear magnetic resonance, high-resolution x-ray diffraction, and magnetic field-dependent neutron diffraction measurements reveal a novel magnetic ground state of Ba0.60K0.40Mn2As2 in which itinerant ferromagnetism (FM) below a Curie temperature T-C approximate to 100 K arising from the doped conduction holes coexists with collinear antiferromagnetism (AFM) of the Mn local moments that order below a Neel temperature T-N 480 K. The FM ordered moments are aligned in the tetragonal ab plane and are orthogonal to the AFM ordered Mn moments that are aligned along the c axis. The magnitude and nature of the low-T FM ordered moment correspond to complete polarization of the doped-hole spins (half-metallic itinerant FM) as deduced from magnetization and ab-plane electrical resistivity measurements.

引用

页数：5

共 33 条

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