2019/04/30 by M. M. Glazov, M. A. Semina, Cédric Robert +5
Materials Science · Physics and Astronomy · #2D Materials and Applications #Condensed matter physics #Electron #Ga2O3 and related materials #Graphene research and applications #Magnetic field #Materials science #Phonon #Physics #Polaron #Quantum mechanics #Renormalization #cond-mat.mes-hall #cond-mat.mtrl-sci #cond-mat.other
paper · pdf · doi:10.1103/physrevb.100.041301
published as Phys. Rev. B 100, 041301 (2019) · 7 pages, 3 figures + supplement 4 pages
arxiv created 2019/06/18 · openalex publication_date 2019/07/08 · arxiv updated 2019/07/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study theoretically intervalley coupling in transition metal dichalcogenide monolayers due to electron interaction with short-wavelength phonons. We demonstrate that this intervalley polaron coupling results in (i) a renormalization of the conduction band spin splitting and (ii) an increase of the electron effective masses. We also calculate the renormalization of the cyclotron energy and the Landau level splitting in the presence of an external magnetic field. An intervalley magnetophonon resonance is uncovered. Similar, but much weaker effects are also expected for the valence band holes. These results might help to resolve the discrepancy between ab initio values of the electron effective masses and the ones deduced from magnetotransport measurements.