Magnetic resonance in a pyrochlore antiferromagnet Gd2Ti2O7

Abstract

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.

4 pages, 4 figures

References in corpus (7)

• Enhanced magnetocaloric effect in frustrated magnets
• Magnetic ordering in Gd2Sn2O7: the archetypal Heisenberg pyrochlore antiferromagnet
• Magnetocaloric effect in pyrochlore antiferromagnet Gd2Ti2O7
• Magnetic density of states at low energy in geometrically frustrated systems
• Magnetic phase diagram of the antiferromagnetic pyrochlore Gd2Ti2O7
• Single-ion anisotropy in the gadolinium pyrochlores studied by an electron paramagnetic resonance
• Degeneracy and Strong Fluctuation-Induced First-Order Phase Transition in the Dipolar Pyrochlore Antiferromagnet

Cited by in corpus (9)

• Magnetic Pyrochlore Oxides
• Magnetic excitations in dipolar pyrochlore antiferromagnet Gd${}_2$Sn${}_2$O${}_7$
• Magnetic interactions in the tripod-kagome antiferromagnet Mg${}_2$Gd${}_3$Sb${}_3$O${}_{14}$ probed by static magnetometry and high-field ESR spectroscopy
• Spin-liquid dynamics of pyrochlore magnets Gd2Ti2O7 and Gd2Sn2O7
• Evidence for orthorhombic distortions in the ordered state of ZnCr${}_2$O${}_4$: A magnetic resonance study
• Novel magnetic phases in a Gd2Ti2O7 pyrochlore for a field applied along the [100] axis
• Low-temperature heat transport of the geometrically frustrated antiferromagnets R_2Ti_2O_7 (R = Gd and Er)
• Numeric calculation of antiferromagnetic resonance frequencies for the noncollinear antiferromagnet
• Splitting of antiferromagnetic resonance modes in the quasi-two-dimensional collinear antiferromagnet Cu(en)(H${}_2$O)${}_2$SO${}_4$