# High-field thermal transport properties of the Kitaev quantum magnet α−RuCl3 : Evidence for low-energy excitations beyond the critical field

@article{Hentrich2020HighfieldTT,
title={High-field thermal transport properties of the Kitaev quantum magnet
$\alpha$−RuCl3
: Evidence for low-energy excitations beyond the critical field},
author={Richard Hentrich and Xiaochen Hong and Matthias Gillig and Federico Caglieris and Matija {\vC}ulo and M. Shahrokhvand and Uli Zeitler and Maria Roslova and Anna Isaeva and Thomas Doert and Lukas Janssen and Matthias Vojta and Bernd B{\"u}chner and Christian Hess},
journal={Physical Review B},
year={2020}
}
• Published 30 October 2020
• Physics
• Physical Review B
We investigate the phononic in-plane longitudinal low-temperature thermal conductivity kappa_ab of the Kitaev quantum magnet alpha-RuCl3 for large in-plane magnetic fields up to 33 T. Our data reveal for fields larger than the critical field Bc ~ 8 T, at which the magnetic order is suppressed, a dramatic increase of kappa_ab at all temperatures investigated. The analysis of our data shows that the phonons are not only strongly scattered by a magnetic mode at relatively large energy which scales…
12 Citations

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## References

SHOWING 1-10 OF 81 REFERENCES

### Phys

• Rev. Lett. 120, 117204
• 2018
• Physics
• 2018
Recent studies have brought α-RuCl3 to the forefront of experimental searches for materials realizing Kitaev spin-liquid physics. This material exhibits strongly anisotropic exchange interactions

• 423002
• 2019

### Phys

• Rev. B 96, 241107
• 2017

### and R

• Valent́ı, Phys. Rev. Lett. 120, 077203
• 2018

### Phys

• Rev. B 98, 184408
• 2018

### Phys

• Rev. B 96, 041405
• 2017
• Materials Science
• 2020
We report a $^{35}\mathrm{Cl}$ nuclear magnetic resonance (NMR) study of the diluted Kitaev material