The physical properties of the antiferroquadrupolar state occurring in TmTe below TQ=1.8 K have been studied using neutron diffraction in applied magnetic fields. A field-induced antiferromagnetic component k = (1/2,1/2,1/2) is observed and, from its magnitude and direction for different orientations of H, an O(2,2) quadrupole order parameter is inferred. Measurements below TN ~= 0.5 K reveal that the magnetic structure is canted, in agreement with theoretical predictions for in-plane antiferromagnetism. Complex domain repopulation effects occur when the field is increased in the ordered phases, with discontinuities in the superstructure peak intensities above 4 T.
@article{arxiv.cond-mat/0112114,
title = {Antiferroquadrupolar Order in the Magnetic Semiconductor TmTe},
author = {J. M. Mignot and A. Gukasov and C. P. Yang and P. Link and T. Matsumura and T. Suzuki},
journal= {arXiv preprint arXiv:cond-mat/0112114},
year = {2015}
}
Comments
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)