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.
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页数：7
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