L. Ciorciaro
;
T. Smoleński
;
I. Morera
;
N. Kiper
;
S. Hiestand
;
M. Kroner
;
Y. Zhang
;
K. Watanabe
(National Institute for Materials Science)
;
T. Taniguchi
(National Institute for Materials Science)
;
E. Demler
;
A. İmamoğlu
Collection
Citation
Description:
(abstract)Magnetic properties of materials ranging from conventional ferromagnetic metals to strongly correlated materials such as cuprates originate from Coulomb exchange interactions. The existence of alternate mechanisms for magnetism that could naturally facilitate electrical control have been discussed theoretically but an experimental demonstration in an extended system has been missing. Here, we investigate MoSe2/WS2 van der Waals heterostructures in the vicinity of Mott insulator states of electrons forming a frustrated triangular lattice and observe direct evidence for magnetic correlations originating from a kinetic mechanism. By directly measuring electronic magnetization through the strength of the polarization-selective attractive polaron resonance, we find that when the Mott state is electron doped the system exhibits ferromagnetic correlations in agreement with the Nagaoka mechanism.
Rights:
Keyword: Magnetic properties, Coulomb exchange interactions, MoSe2/WS2 heterostructures
Date published: 2023-11-16
Publisher: Springer Science and Business Media LLC
Journal:
- Nature (ISSN: 00280836) vol. 623 issue. 7987 p. 509-513
Funding:
Manuscript type: Publisher's version (Version of record)
MDR DOI:
First published URL: https://doi.org/10.1038/s41586-023-06633-0
Related item:
Other identifier(s):
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Updated at: 2025-02-23 22:48:13 +0900
Published on MDR: 2025-02-23 22:48:13 +0900
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