Charge-neutral fermions and magnetic field-driven instability in insulating YbIr3Si7

Y. Sato; S. Suetsugu; T. Tominaga; Y. Kasahara; S. Kasahara; T. Kobayashi; S. Kitagawa; K. Ishida; R. Peters; T. Shibauchi; A. H. Nevidomskyy; L. Qian; E. Morosan; Y. Matsuda

doi:10.1038/s41467-021-27541-9

Nature Communications (Jan 2022)

Charge-neutral fermions and magnetic field-driven instability in insulating YbIr3Si7

Y. Sato,
S. Suetsugu,
T. Tominaga,
Y. Kasahara,
S. Kasahara,
T. Kobayashi,
S. Kitagawa,
K. Ishida,
R. Peters,
T. Shibauchi,
A. H. Nevidomskyy,
L. Qian,
E. Morosan,
Y. Matsuda

Affiliations

Y. Sato: Department of Physics, Kyoto University
S. Suetsugu: Department of Physics, Kyoto University
T. Tominaga: Department of Physics, Kyoto University
Y. Kasahara: Department of Physics, Kyoto University
S. Kasahara: Department of Physics, Kyoto University
T. Kobayashi: Department of Physics, Kyoto University
S. Kitagawa: Department of Physics, Kyoto University
K. Ishida: Department of Physics, Kyoto University
R. Peters: Department of Physics, Kyoto University
T. Shibauchi: Department of Advanced Materials Science, University of Tokyo
A. H. Nevidomskyy: Department of Physics and Astronomy, Rice University
L. Qian: Department of Chemistry, Rice University
E. Morosan: Department of Physics and Astronomy, Rice University
Y. Matsuda: Department of Physics, Kyoto University

DOI: https://doi.org/10.1038/s41467-021-27541-9
Journal volume & issue: Vol. 13, no. 1
pp. 1 – 9

Abstract

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Charge-neutral excitations have been proposed to explain metal-like thermal transport in Kondo insulators. Here, the authors demonstrate the coupling between charge-neutral excitations and spin degrees of freedom in a Kondo insulator YbIr3Si7, which puts restrictions on current theories.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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