Magnetic resonance in the pyrochlore antiferromagnet Gd2Ti2O7

被引：16
|
作者：
Sosin, S. S. [1 ]
Smirnov, A. I.
Prozorova, L. A.
Balakrishnan, G.
Zhitomirsky, M. E.
机构：
[1] RAS, PL Kapitza Inst Phys Problems, Moscow 119334, Russia
[2] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England
[3] CEA, DSM, DRFMC, SPSMS, F-38054 Grenoble, France
来源：
PHYSICAL REVIEW B | 2006年 / 73卷 / 21期
关键词：
D O I：
10.1103/PhysRevB.73.212402
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An electron spin resonance study of frustrated pyrochlore Gd2Ti2O7 is performed in a wide frequency band for a temperature range 0.4-30 K, which covers paramagnetic and magnetically ordered phases. The paramagnetic resonance reveals a spectroscopic g factor of about 2.0 and a temperature-dependent linewidth. In ordered phases magnetic resonance spectra are distinctive for a nonplanar cubic (or tetrahedral) antiferromagnet with an isotropic susceptibility. In the high-field-saturated phase, weakly dispersive soft modes are observed and their field evolution is traced.
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页数：4
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