論文

査読有り
2017年8月

Giant thermal Hall effect in multiferroics

NATURE MATERIALS
  • T. Ideue
  • ,
  • T. Kurumaji
  • ,
  • S. Ishiwata
  • ,
  • Y. Tokura

16
8
開始ページ
797
終了ページ
+
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1038/NMAT4905
出版者・発行元
NATURE PUBLISHING GROUP

Multiferroics(1,2), in which dielectric and magnetic orders coexist and couple with each other, attract renewed interest for their cross-correlated phenomena(3,4), offering a fundamental platform for novel functionalities. Elementary excitations in such systems are strongly affected by the lattice-spin interaction, as exemplified by the electromagnons(5,6) and the magneto-thermal transport(7-10). Here we report an unprecedented coupling between magnetism and phonons in multiferroics, namely, the giant thermal Hall effect. The thermal transport of insulating polar magnets (ZnxFe1-x)(2)Mo3O8 is dominated by phonons, yet extremely sensitive to the magnetic structure. In particular, large thermal Hall conductivities are observed in the ferrimagnetic phase, indicating unconventional lattice-spin interactions and a new mechanism for the Hall effect in insulators. Our results show that the thermal Hall effect in multiferroic materials can be an effective probe for strong lattice-spin interactions and provide a new tool for magnetic control of thermal currents.

Web of Science ® 被引用回数 : 28

リンク情報
DOI
https://doi.org/10.1038/NMAT4905
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000406424600009&DestApp=WOS_CPL
URL
http://orcid.org/0000-0003-1696-2514

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