Suppression of Thermal Conductivity via Singlet-Dominated Scattering in TmFeO$_3$

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Hauptverfasser:	McLanahan, M. L., Lederman, D., Ramirez, A. P.
Format:	Preprint
Veröffentlicht:	2025
Schlagworte:	Materials Science
Online-Zugang:	Acceder al recurso
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author	McLanahan, M. L. Lederman, D. Ramirez, A. P.
author_facet	McLanahan, M. L. Lederman, D. Ramirez, A. P.
contents	We measured the thermal conductivity of the rare-earth orthoferrites, $R$FeO$_3$, where $R$ = Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb from 3 K to 300 K and see an anomalous strong suppression for TmFeO$_3$ over most of the temperature range. Using a Debye thermal transport model, we demonstrate that this suppression is due to resonant scattering between phonons and the Tm$^{3+}$ $4f$ singlet crystal field levels. The implications of these results are discussed in context of thermal conductivity studies in quantum magnets.
format	Preprint
id	arxiv_https___arxiv_org_abs_2507_12608
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Suppression of Thermal Conductivity via Singlet-Dominated Scattering in TmFeO$_3$ McLanahan, M. L. Lederman, D. Ramirez, A. P. Materials Science We measured the thermal conductivity of the rare-earth orthoferrites, $R$FeO$_3$, where $R$ = Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb from 3 K to 300 K and see an anomalous strong suppression for TmFeO$_3$ over most of the temperature range. Using a Debye thermal transport model, we demonstrate that this suppression is due to resonant scattering between phonons and the Tm$^{3+}$ $4f$ singlet crystal field levels. The implications of these results are discussed in context of thermal conductivity studies in quantum magnets.
title	Suppression of Thermal Conductivity via Singlet-Dominated Scattering in TmFeO$_3$
topic	Materials Science
url	https://arxiv.org/abs/2507.12608

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