Large resistivity change and phase transition in the antiferromagnetic semiconductors LiMnAs and LaOMnAs

被引：34

作者：

Beleanu, A. ^{[1
]}

Kiss, J. ^{[1
]}

Kreiner, G. ^{[1
]}

Koehler, C. ^{[1
]}

Muechler, L. ^{[1
]}

Schnelle, W. ^{[1
]}

Burkhardt, U. ^{[1
]}

Chadov, S. ^{[1
]}

Medvediev, S. ^{[1
]}

Ebke, D. ^{[1
]}

Felser, C. ^{[1
]}

Cordier, G. ^{[2
]}

Albert, B. ^{[2
]}

Hoser, A. ^{[3
]}

Bernardi, F. ^{[4
]}

Larkin, T. I. ^{[5
]}

Proepper, D. ^{[5
]}

Boris, A. V. ^{[5
]}

Keimer, B. ^{[5
]}

机构：

[1] Max Planck Inst Chem Phys Fester Stoffe, D-01187 Dresden, Germany

[2] Tech Univ Darmstadt, Eduard Zintl Inst Inorgan & Phys Chem, Darmstadt, Germany

[3] Helmholtz Zentrum Berlin Mat & Energie GmbH, Berlin, Germany

[4] Univ Fed Rio Grande do Sul, Inst Fis, Dept Fis, Porto Alegre, RS, Brazil

[5] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

来源：

PHYSICAL REVIEW B | 2013年 / 88卷 / 18期

关键词：

TOTAL-ENERGY CALCULATIONS; MAGNETIC-PROPERTIES; NEUTRON-DIFFRACTION; MAGNETORESISTANCE; FERROMAGNETISM; SPINTRONICS; MANGANESE; STATE;

D O I：

10.1103/PhysRevB.88.184429

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Antiferromagnetic semiconductors are new alternative materials for spintronic applications and spin valves. In this work, we report a detailed investigation of two antiferromagnetic semiconductors AMnAs (A = Li, LaO), which are isostructural to the well-known LiFeAs and LaOFeAs superconductors. Here we present a comparison between the structural, magnetic, and electronic properties of LiMnAs, LaOMnAs, and related materials. Interestingly, both LiMnAs and LaOMnAs show a variation in resistivity with more than five orders of magnitude, making them particularly suitable for use in future electronic devices. Neutron and x-ray diffraction measurements on LiMnAs show a magnetic phase transition corresponding to the Neel temperature of 373.8 K, and a structural transition from the tetragonal to the cubic phase at 768 K. These experimental results are supported by density functional theory calculations.

引用

页数：12

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