Interlayer magnetophononic coupling in MnBi₂Te₄.

ABSTRACT: The emergence of magnetism in quantum materials creates a platform to realize spin-based applications in spintronics, magnetic memory, and quantum information science. A key to unlocking new functionalities in these materials is the discovery of tunable coupling between spins and other microscopic degrees of freedom. We present evidence for interlayer magnetophononic coupling in the layered magnetic topological insulator MnBi₂Te₄. Employing magneto-Raman spectroscopy, we observe anomalies in phonon scattering intensities across magnetic field-driven phase transitions, despite the absence of discernible static structural changes. This behavior is a consequence of a magnetophononic wave-mixing process that allows for the excitation of zone-boundary phonons that are othe

SUBMITTER: Padmanabhan H 

PROVIDER: S-EPMC8993894 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature