High-Field Terahertz Spin Resonance in Cr${}_2$O${}_3$ above the Spin-Flop Transition

Abstract

We report single-shot terahertz time-domain spectroscopy of Cr${}_2$O${}_3$ in pulsed magnetic fields up to 30 T. Well above the spin-flop field, in the 20-30 T range, the resonance frequency exhibits a nearly linear field dependence with a slope of ~22 GHz/T, smaller than the 28 GHz/T reported from low-field measurements. This reduction is insensitive to temperature and to a 15° field tilt, suggesting an intrinsic high-field property.

8 pages, one figure

References in corpus (5)

• Single-Shot Terahertz Time-Domain Spectroscopy in Pulsed High Magnetic Fields
• Time-Domain Terahertz Spectroscopy in High Magnetic Fields
• Magnetostriction, piezomagnetism and domain nucleation in a kagome antiferromagnet
• On the sign of the linear magnetoelectric coefficient in Cr${}_2$O${}_3$
• Exceptional field dependence of antiferromagnetic magnons in LiFePO${}_4$