Anomalous Nernst effects in pyrochlore molybdates with spin chirality

  • The transverse thermoelectric (Nernst) effect on pyrochlore molybdates is investigated experimentally. In Nd2Mo2O7 and Sm2Mo2O7 with the spin chirality, the Nernst signal, which mostly arises from the transverse heat current (or equivalently the transverse Peltier coefficient αxy), shows a low-temperature (20–30 K) positive extremum, whereas it is absent in (Gd0.95Ca0.05)2Mo2O7 with no single-spin anisotropy of the rare-earth ion and hence with no spin chirality. The correlation between the Hall conductivity σxy and αxy in Nd2Mo2O7 also indicates the spin chirality plays a significant role in the spontaneous (anomalous) Nernst effect.

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Metadaten
Author:N. Hanasaki, K. Sano, Y. Onose, T. Ohtsuka, S. Iguchi, István KézsmárkiORCiDGND, S. Miyasaka, S. Onoda, N. Nagaosa, Y. Tokura
URN:urn:nbn:de:bvb:384-opus4-437340
Frontdoor URLhttps://opus.bibliothek.uni-augsburg.de/opus4/43734
ISSN:0031-9007OPAC
ISSN:1079-7114OPAC
Parent Title (English):Physical Review Letters
Publisher:American Physical Society (APS)
Type:Article
Language:English
Year of first Publication:2008
Publishing Institution:Universität Augsburg
Release Date:2018/11/19
Volume:100
Issue:10
First Page:106601
DOI:https://doi.org/10.1103/physrevlett.100.106601
Institutes:Mathematisch-Naturwissenschaftlich-Technische Fakultät
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Experimentalphysik V
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):Deutsches Urheberrecht