2024/06/06 by Henry Mittenzwey, Abhijeet Kumar, Mittenzwey, Henry +15 · 3 citations
Chemistry · Physics and Astronomy · #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Optics (physics.optics) #Quantum Physics (quant-ph) #Quantum optics and atomic interactions #Semiconductor Quantum Structures and Devices #Spectroscopy and Laser Applications
paper · pdf · doi:10.48550/arxiv.2406.04454
openalex publication_date 2024/06/06 · openalex created_date 2024/06/11 · openalex updated_date 2026/08/01
We investigate spin relaxation dynamics of interlayer excitons in a MoSe2/MoS2 heterostructure induced by the Rashba effect. In such a system, Rashba interactions arise from an out-of-plane electric field due to photo-generated interlayer excitons inducing a phonon-assisted intravalley spin relaxation. We develop a theoretical description based on a microscopic approach to quantify the magnitude of Rashba interactions and test these predictions via time-resolved Kerr rotation measurements. In agreement with the calculations, we find that the Rashba-induced intravalley spin mixing becomes the dominating spin relaxation channel above T = 50 K. Our work identifies a previously unexplored spin-depolarization channel in heterostructures which can be used for ultrafast spin manipulation.