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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
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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