Open AccessAntiferroquadrupolar Order in the Magnetic Semiconductor TmTe
Author(s) -
Jean-Michel Mignot,
Arsen Gukasov,
Changping Yang,
P. Link,
Takeshi Matsumura,
Takashi Suzuki
Publication year - 2002
Publication title -
journal of the physical society of japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 139
eISSN - 1347-4073
pISSN - 0031-9015
DOI - 10.1143/jpsjs.71s.39
Subject(s) - antiferromagnetism , condensed matter physics , classification of discontinuities , physics , neutron diffraction , superstructure , magnetic structure , magnetic field , quadrupole , diffraction , materials science , magnetization , atomic physics , optics , quantum mechanics , thermodynamics , mathematical analysis , mathematics
The physical properties of the antiferroquadrupolar state occurring in TmTebelow TQ=1.8 K have been studied using neutron diffraction in applied magneticfields. A field-induced antiferromagnetic component k = (1/2,1/2,1/2) isobserved and, from its magnitude and direction for different orientations of H,an O(2,2) quadrupole order parameter is inferred. Measurements below TN ~= 0.5K reveal that the magnetic structure is canted, in agreement with theoreticalpredictions for in-plane antiferromagnetism. Complex domain repopulationeffects occur when the field is increased in the ordered phases, withdiscontinuities in the superstructure peak intensities above 4 T.Comment: 6 pages, 6 figures, Presented at the International Conference on Strongly Correlated Electrons with Orbital Degrees of Freedom (ORBITAL 2001), September 11-14, 2001 (Sendai, JAPAN). To appear in: Journal of the Physical Society of Japan (2002
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