Publication: Dzyaloshinskii-Moriya interaction and spin reorientation transition in the frustrated kagome lattice antiferromagnet
Issued Date
2011-06-09
Resource Type
ISSN
1550235X
10980121
10980121
Other identifier(s)
2-s2.0-79961148629
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Mahidol University
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SCOPUS
Bibliographic Citation
Physical Review B - Condensed Matter and Materials Physics. Vol.83, No.21 (2011)
Suggested Citation
K. Matan, B. M. Bartlett, J. S. Helton, V. Sikolenko, S. Mat'Aš, K. Prokeš, Y. Chen, J. W. Lynn, D. Grohol, T. J. Sato, M. Tokunaga, D. G. Nocera, Y. S. Lee Dzyaloshinskii-Moriya interaction and spin reorientation transition in the frustrated kagome lattice antiferromagnet. Physical Review B - Condensed Matter and Materials Physics. Vol.83, No.21 (2011). doi:10.1103/PhysRevB.83.214406 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/12114
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Title
Dzyaloshinskii-Moriya interaction and spin reorientation transition in the frustrated kagome lattice antiferromagnet
Abstract
Magnetization, specific heat, and neutron scattering measurements were performed to study a magnetic transition in jarosite, a spin-52 kagome lattice antiferromagnet. When a magnetic field is applied perpendicular to the kagome plane, magnetizations in the ordered state show a sudden increase at a critical field H c , indicative of the transition from antiferromagnetic to ferromagnetic states. This sudden increase arises as the spins on alternate kagome planes rotate 180 ° to ferromagnetically align the canted moments along the field direction. The canted moment on a single kagome plane is a result of the Dzyaloshinskii-Moriya interaction. For H < H c , the weak ferromagnetic interlayer coupling forces the spins to align in such an arrangement that the canted components on any two adjacent layers are equal and opposite, yielding a zero net magnetic moment. For H > H c , the Zeeman energy overcomes the interlayer coupling causing the spins on the alternate layers to rotate, aligning the canted moments along the field direction. Neutron scattering measurements provide the first direct evidence of this 180 ° spin rotation at the transition. © 2011 American Physical Society.