Magnetic structure of the antiferromagnetic half-Heusler compound NdBiPt

被引：26

作者：

Mueller, R. A. ^{[1
]}

Desilets-Benoit, A. ^{[1
]}

Gauthier, N. ^{[1
]}

Lapointe, L. ^{[1
]}

Bianchi, A. D. ^{[1
]}

Maris, T. ^{[2
]}

Zahn, R. ^{[3
]}

Beyer, R. ^{[3
]}

Green, E. ^{[3
]}

Wosnitza, J. ^{[3
]}

Yamani, Z. ^{[4
]}

Kenzelmann, M. ^{[5
]}

机构：

[1] Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada

[2] Univ Montreal, Dept Chim, Montreal, PQ H3C 3J7, Canada

[3] Helmholtz Zentrum Dresden Rossendorf, Hochfeld Magnetlabor Dresden HLD EMFL, Dresden, Germany

[4] CNR, Canadian Neutron Beam Ctr, Chalk River, ON, Canada

[5] Paul Scherrer Inst, Lab Sci Dev & Novel Mat, Villigen, Switzerland

来源：

PHYSICAL REVIEW B | 2015年 / 92卷 / 18期

基金：

加拿大自然科学与工程研究理事会;

关键词：

DEPENDENT FERMI-SURFACE; STATE; PHASE;

D O I：

10.1103/PhysRevB.92.184432

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present results of single-crystal neutron-diffraction experiments on the rare-earth, half-Heusler antiferromagnet (AFM) NdBiPt. This compound exhibits an AFM phase transition at T-N = 2.18 K with an ordered moment of 1.78(9) mu(B) per Nd atom. The magnetic moments are aligned along the [001] direction, arranged in a type-I AFM structure with ferromagnetic planes, alternating antiferromagnetically along a propagation vector tau of (100). The RBiPt (R = Ce-Lu) family of materials has been proposed as candidates for a new family of antiferromagnetic topological insulators (AFTIs) with a magnetic space group that corresponds to a type-II AFM structure where ferromagnetic sheets are stacked along the space diagonal. The resolved structure makes it unlikely that NdBiPt qualifies as an AFTI.

引用

页数：7

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