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Title: Phonon thermal Hall effect in a metallic spin ice

Abstract

It has become common knowledge that phonons can generate thermal Hall effect in a wide variety of materials, although the underlying mechanism is still controversial. We study longitudinal κxx and transverse κxy thermal conductivity in Pr2Ir2O7, which is a metallic analog of spin ice. Despite the presence of mobile charge carriers, we find that both κxx and κxy are dominated by phonons. A T/H scaling of κxx unambiguously reveals that longitudinal heat current is substantially impeded by resonant scattering of phonons on paramagnetic spins. Upon cooling, the resonant scattering is strongly affected by a development of spin ice correlation and κxx deviates from the scaling in an anisotropic way with respect to field directions. Strikingly, a set of the κxx and κxy data clearly shows that κxy correlates with κxx in its response to magnetic field including a success of the T/H scaling and its failure at low temperature. This remarkable correlation provides solid evidence that an indispensable role is played by spin-phonon scattering not only for hindering the longitudinal heat conduction, but also for generating the transverse response.

Authors:
 [1];  [2];  [1];  [3]; ORCiD logo [1]
  1. Gakushuin University, Tokyo (Japan)
  2. Univ. of Tokyo (Japan)
  3. Univ. of Tokyo (Japan); Johns Hopkins Univ., Baltimore, MD (United States)
Publication Date:
Research Org.:
Johns Hopkins Univ., Baltimore, MD (United States); Energy Frontier Research Centers (EFRC) (United States). Institute for Quantum Matter (IQM)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Japan Science and Technology Agency (JST)
OSTI Identifier:
1904344
Grant/Contract Number:  
SC0019331; 19H01840; 20H05655; JPMJCR18T3
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 13; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 97 MATHEMATICS AND COMPUTING; electronic properties and materials; magnetic properties and materials

Citation Formats

Uehara, Taiki, Ohtsuki, Takumi, Udagawa, Masafumi, Nakatsuji, Satoru, and Machida, Yo. Phonon thermal Hall effect in a metallic spin ice. United States: N. p., 2022. Web. doi:10.1038/s41467-022-32375-0.
Uehara, Taiki, Ohtsuki, Takumi, Udagawa, Masafumi, Nakatsuji, Satoru, & Machida, Yo. Phonon thermal Hall effect in a metallic spin ice. United States. https://doi.org/10.1038/s41467-022-32375-0
Uehara, Taiki, Ohtsuki, Takumi, Udagawa, Masafumi, Nakatsuji, Satoru, and Machida, Yo. Sat . "Phonon thermal Hall effect in a metallic spin ice". United States. https://doi.org/10.1038/s41467-022-32375-0. https://www.osti.gov/servlets/purl/1904344.
@article{osti_1904344,
title = {Phonon thermal Hall effect in a metallic spin ice},
author = {Uehara, Taiki and Ohtsuki, Takumi and Udagawa, Masafumi and Nakatsuji, Satoru and Machida, Yo},
abstractNote = {It has become common knowledge that phonons can generate thermal Hall effect in a wide variety of materials, although the underlying mechanism is still controversial. We study longitudinal κxx and transverse κxy thermal conductivity in Pr2Ir2O7, which is a metallic analog of spin ice. Despite the presence of mobile charge carriers, we find that both κxx and κxy are dominated by phonons. A T/H scaling of κxx unambiguously reveals that longitudinal heat current is substantially impeded by resonant scattering of phonons on paramagnetic spins. Upon cooling, the resonant scattering is strongly affected by a development of spin ice correlation and κxx deviates from the scaling in an anisotropic way with respect to field directions. Strikingly, a set of the κxx and κxy data clearly shows that κxy correlates with κxx in its response to magnetic field including a success of the T/H scaling and its failure at low temperature. This remarkable correlation provides solid evidence that an indispensable role is played by spin-phonon scattering not only for hindering the longitudinal heat conduction, but also for generating the transverse response.},
doi = {10.1038/s41467-022-32375-0},
journal = {Nature Communications},
number = 1,
volume = 13,
place = {United States},
year = {Sat Aug 06 00:00:00 EDT 2022},
month = {Sat Aug 06 00:00:00 EDT 2022}
}

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