Large Hall and Nernst responses from thermally induced spin chirality in a spin-trimer ferromagnet - Publikacja - MOST Wiedzy

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Large Hall and Nernst responses from thermally induced spin chirality in a spin-trimer ferromagnet

Abstrakt

The long-range order of noncoplanar magnetic textures with scalar spin chirality (SSC) can couple to conduction electrons to produce an additional (termed geometrical or topological) Hall effect. One such example is the Hall effect in the skyrmion lattice state with quantized SSC. An alternative route to attain a finite SSC is via the spin canting caused by thermal fluctuations in the vicinity of the ferromagnetic ordering transition. Here, we report that for a highly conducting ferromagnet with a two-dimensional array of spin trimers, the thermally generated SSC can give rise to a gigantic geometrical Hall conductivity even larger than the intrinsic anomalous Hall conductivity of the ground state. We also demonstrate that the SSC induced by thermal fluctuations leads to a strong response in the Nernst effect. A comparison of the sign and magnitude of fluctuation–Nernst and Hall responses in fundamental units indicates the need for a momentum–space picture to model these thermally induced signals.

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Wersja publikacji
Accepted albo Published Version
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1073/pnas.2023588118
Licencja
Copyright (2021 National Academy of Sciences)

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA nr 118, strony 1 - 7,
ISSN: 0027-8424
Język:
angielski
Rok wydania:
2021
Opis bibliograficzny:
Kolincio K., Hirschberger M., Masell J., Gao S., Kikkawa A., Taguchi Y., Arima T., Nagaosa N., Tokura Y.: Large Hall and Nernst responses from thermally induced spin chirality in a spin-trimer ferromagnet// PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA -Vol. 118,iss. 33 (2021), s.1-7
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1073/pnas.2023588118
Weryfikacja:
Politechnika Gdańska

wyświetlono 122 razy

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