Nature of Magnetic Excitations in the High-Field Phase of α-RuCl3
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Contributors
Abstract
We present comprehensive electron spin resonance (ESR) studies of in-plane oriented single crystals of α-RuCl3, a quasi-two-dimensional material with honeycomb structure, focusing on its high-field spin dynamics. The measurements were performed in magnetic fields up to 16 T, applied along the [110] and [100] directions. Several ESR modes were detected. Combining our findings with recent inelastic neutron-and Raman-scattering data, we identified most of the observed excitations. Most importantly, we show that the low-temperature ESR response beyond the boundary of the magnetically ordered region is dominated by single-and two-particle processes with magnons as elementary excitations. The peculiarities of the excitation spectrum in the vicinity of the critical field are discussed.
Details
Original language | English |
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Article number | 037202 |
Journal | Physical review letters |
Volume | 125 |
Issue number | 3 |
Publication status | Published - 17 Jul 2020 |
Peer-reviewed | Yes |
External IDs
PubMed | 32745422 |
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