Magnetic resonance in a pyrochlore antiferromagnet Gd2Ti2O7

Details Magnetic resonance in a pyrochlore antiferromagnet Gd2Ti2O7 Magnetic resonance in a pyrochlore antiferromagnet Gd2Ti2O7

2006-03-24

arxiv.org/abs/cond-mat/0603653v1

Physical Review B 73, 212402 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.73.212402

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 the spectroscopic g-factor 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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