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Ferromagnetism out of charge fluctuation of strongly correlated electrons in $\upkappa$-(BEDT-TTF)2Hg(SCN)2Brстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Yamashita Minoru, Sugiura Shiori, Ueda Akira, Dekura Shun, Terashima Taichi, Uji Shinya, Sunairi Yoshiya, Mori Hatsumi, Zhilyaeva Elena I., Torunova Svetlana A., Lyubovskaya Rimma N., Drichko Natalia, Hotta Chisa
- Журнал: NPJ Quantum Materials
- Том: 6
- Номер: 1
- Год издания: 2021
- Издательство: Nature Research
- Местоположение издательства: London, UK
- Номер статьи: 87
- DOI: 10.1038/s41535-021-00387-6
- Аннотация: We perform magnetic susceptibility and magnetic torque measurements on the organic κ-(BEDT-TTF)2Hg(SCN)2Br, which is recently suggested to host an exotic quantum dipole-liquid in its low-temperature insulating phase. Below the metal-insulator (MI) transition temperature, the magnetic susceptibility follows a Curie–Weiss law with a positive Curie–Weiss temperature, and a particular M∝H−−√ curve is observed. The emergent ferromagnetically interacting spins amount to about 1/6 of the full spin moment of localized charges. Taking account of the possible inhomogeneous quasi-charge-order that forms a dipole-liquid, we construct a model of antiferromagnetically interacting spin chains in two adjacent charge-ordered domains, which are coupled via fluctuating charges on a Mott-dimer at the boundary. We find that the charge fluctuations can draw a weak ferromagnetic moment out of the spin singlet domains.
- Добавил в систему: Торунова Светлана Анатольевна