| Autor: |
Ponomaryov, A. N., Schulze, E., Wosnitza, J., Lampen-Kelley, P., Banerjee, A., Yan, J. -Q., Bridges, C. A., Mandrus, D. G., Nagler, S. E., Kolezhuk, A. K., Zvyagin, S. A. |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Phys. Rev. B 96, 241107 (2017) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.96.241107 |
| Popis: |
We present high-field electron spin resonance (ESR) studies of the honeycomb-lattice material $\alpha$-RuCl$_3$, a prime candidate to exhibit Kitaev physics. Two modes of antiferromagnetic resonance were detected in the zigzag ordered phase, with magnetic field applied in the $ab$ plane. A very rich excitation spectrum was observed in the field-induced quantum paramagnetic phase. The obtained data are compared with results of recent numerical calculations, strongly suggesting a very unconventional multiparticle character of the spin dynamics in $\alpha$-RuCl$_3$. The frequency-field diagram of the lowest-energy ESR mode is found consistent with the behavior of the field-induced energy gap, revealed by thermodynamic measurements. |
| Databáze: |
arXiv |
| Externí odkaz: |
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