Angular-Momentum Transfer Mediated by a Vibronic-Bound-State.

Autor: Pai YY; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.; Materials Department, University of California Santa Barbara, Santa Barbara, CA, 93106, USA., Marvinney CE; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA., Pokharel G; Materials Department, University of California Santa Barbara, Santa Barbara, CA, 93106, USA., Xing J; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA., Li H; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA., Li X; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA., Chilcote M; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA., Brahlek M; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA., Lindsay L; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA., Miao H; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA., Sefat AS; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA., Parker D; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA., Wilson SD; Materials Department, University of California Santa Barbara, Santa Barbara, CA, 93106, USA., Gardner JS; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA., Liang L; Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA., Lawrie BJ; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
Jazyk: angličtina
Zdroj: Advanced science (Weinheim, Baden-Wurttemberg, Germany) [Adv Sci (Weinh)] 2024 Jan; Vol. 11 (2), pp. e2304698. Date of Electronic Publication: 2023 Nov 09.
DOI: 10.1002/advs.202304698
Abstrakt: The notion that phonons can carry pseudo-angular momentum has many major consequences, including topologically protected phonon chirality, Berry curvature of phonon band structure, and the phonon Hall effect. When a phonon is resonantly coupled to an orbital state split by its crystal field environment, a so-called vibronic bound state forms. Here, a vibronic bound state is observed in NaYbSe 2 , a quantum spin liquid candidate. In addition, field and polarization dependent Raman microscopy is used to probe an angular momentum transfer of ΔJ z = ±ℏ between phonons and the crystalline electric field mediated by the vibronic bound stat. This angular momentum transfer between electronic and lattice subsystems provides new pathways for selective optical addressability of phononic angular momentum via electronic ancillary states.
(© 2023 Oak Ridge National Laboratory. Advanced Science published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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