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X-ORIGINAL-URL:https://laboratoire-albert-fert.cnrs-thales.fr/
X-WR-CALNAME:Laboratoire Albert Fert
X-WR-CALDESC:CNRS - Thales
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BEGIN:VEVENT
CLASS:PUBLIC
UID:MEC-25db67c5657914454081c6a18e93d6dd@laboratoire-albert-fert.cnrs-thales.fr
DTSTART:20250605T120000Z
DTEND:20250605T130000Z
DTSTAMP:20250528T162800Z
CREATED:20250528
LAST-MODIFIED:20250528
PRIORITY:5
SEQUENCE:4
TRANSP:OPAQUE
SUMMARY:Seminaire – Takeo Kato
DESCRIPTION:Takeo Kato (Institute for Solid State Physics, Université de Tokyo), donnera un séminaire le 05 juin 2025 dans l’auditorium de Thales TRT .\n\nTitre :\nSpin-Chiral Phonon Conversion in Nonmagnetic Metal-Chiral Insulator Junctions\nRésumé :\nRecently, phonon-spin interconversion phenomena have attracted considerable attention as manifestations related to chirality-induced spin selectivity (CISS). Despite numerous investigations [1], the microscopic mechanism governing the interconversion between chiral phonons and electron spins remains unresolved. In this study [2], we develop a theoretical framework for this interconversion by considering the gyromagnetic effect. We analyze a junction system composed of a nonmagnetic metal and a chiral insulator and derive a spin-microscopic rotation coupling at the interface. We demonstrate that a non-equilibrium distribution of chiral phonon modes, induced by a temperature gradient, can generate a spin current across the junction, in consistent with the recent experiment [3]. We also mention extension of this theoretical framework to CISS effect in DNA [4].\nRéferences :\n[1] Y. Togawa et al., J. Phys. Soc. Jpn. 92 (2023) 081006.\n[2] T. Funato, M. Matsuo, and T. Kato, Phys. Rev. Lett. 132, 236201 (2024).\n[3] K. Ohe, et al., Phys. Rev. Lett. 132, 056302 (2024).\n[4] R. Sano and T. Kato, preprint (arXiv:2404.19000).\n
URL:https://laboratoire-albert-fert.cnrs-thales.fr/events/seminaire-takeo-kato/
CATEGORIES:Séminaires
LOCATION:Auditorium Thales
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