Journal article Direct thermal imaging of the influence of a transition metal dichalcogenide interlayer on a spin-current injection in a Pt/Y 3 Fe 5 O 12 heterostructure
Shun-ichi Takano (author) (Search by this author)
ORCID https://orcid.org/0009-0000-4654-2700 (unauthenticated)
ORCID ;
Wenjin Zhang (author) (Search by this author)
ORCID https://orcid.org/0000-0002-3803-4770 (unauthenticated)
ORCID ;
Yui Tamogami (author) (Search by this author)
ORCID https://orcid.org/0009-0000-8573-940X (unauthenticated)
ORCID ; ORCID SAMURAI ;
Shunsuke Mori (author) (Search by this author)
ORCID https://orcid.org/0000-0002-1193-4322 (unauthenticated)
ORCID ;
Yasumitsu Miyata (author) (Search by this author)
ORCID https://orcid.org/0000-0002-9733-5119 (unauthenticated)
ORCID ; ORCID SAMURAI ;
Yusuke Nakanishi (author) (Search by this author)
ORCID https://orcid.org/0000-0001-8782-9556 (unauthenticated)
ORCID
Takano_2026_Jpn._J._Appl._Phys._65_080907.pdf
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Shun-ichi Takano, Wenjin Zhang, Yui Tamogami, Takamasa Hirai, Shunsuke Mori, Yasumitsu Miyata, Ken-ichi Uchida, Yusuke Nakanishi. Direct thermal imaging of the influence of a transition metal dichalcogenide interlayer on a spin-current injection in a Pt/Y 3 Fe 5 O 12 heterostructure. Japanese Journal of Applied Physics. 2026, 65 (8), 080907. https://doi.org/10.35848/1347-4065/ae620f

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(abstract)

The spin Peltier effect (SPE) in Pt/WSe2/Y3Fe5O12 (YIG) and Pt/WS2/YIG heterostructures is investigated using lock-in thermography. Since inserting atomically thin transition metal dichalcogenides (TMDs), such as WSe2, between Pt and YIG is known to enhance the voltage induced by the spin Seebeck effect, similar enhancement is expected for SPE. Contrary to this expectation, the SPE-induced temperature modulation is strongly suppressed in the TMD-inserted regions compared with bare Pt/YIG regions. Raman spectroscopy reveals sputtering-induced structural degradation of WSe2, hindering spin-current injection into YIG. These results highlight the sensitivity of spin-current transport to interface quality in spin-caloritronic devices incorporating atomically thin TMDs.

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Keyword: spin caloritronics, spin Peltier effect, transition metal dichalcogenide, lock-in thermography

Date published: 2026-04-30

Publisher: IOP Publishing

Journal:

  • Japanese Journal of Applied Physics (ISSN: 00214922) vol. 65 issue. 8 080907

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Manuscript type: Publisher's version (Version of record)

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First published URL: https://doi.org/10.35848/1347-4065/ae620f

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Updated at: 2026-05-12 11:28:08 +0900

Published on MDR: 2026-05-12 12:27:03 +0900

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