Emergent Frustration in Co-doped β-Mn

被引：44
|
作者：
Paddison, Joseph A. M. [1 ,2 ]
Stewart, J. Ross [2 ]
Manuel, Pascal [2 ]
Courtois, Pierre [3 ]
McIntyre, Garry J. [4 ]
Rainford, Brian D. [5 ]
Goodwin, Andrew L. [1 ]
机构：
[1] Univ Oxford, Dept Chem, Inorgan Chem Lab, Oxford OX1 3QR, England
[2] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England
[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
[4] Australian Nucl Sci & Technol Org, Lucas Heights, NSW 2234, Australia
[5] Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England
来源：
PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 26期
基金：
英国工程与自然科学研究理事会;
关键词：
Mean field theory;
D O I：
10.1103/PhysRevLett.110.267207
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate low-temperature spin correlations in the metallic frustrated magnet beta-Mn1-xCox. Single-crystal polarized-neutron scattering experiments reveal the persistence of highly structured magnetic diffuse scattering and the absence of periodic magnetic order to T = 0.05 K. We employ reverse Monte Carlo refinements and mean-field theory calculations to construct an effective Hamiltonian which accounts for the magnetic scattering. The interactions we identify describe an emergent spin structure which mimics the triangular lattice antiferromagnet, one of the canonical models of frustrated magnetism.
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页数：5
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