Access the full text.
Sign up today, get DeepDyve free for 14 days.
Loading next page...
/lp/iop-publishing/valley-magnetophonon-resonance-for-interlayer-excitons-yD3drsA0G2
References
References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.
- Publisher
- IOP Publishing
- Copyright
- © 2022 IOP Publishing Ltd
- eISSN
- 2053-1583
- DOI
- 10.1088/2053-1583/ac8602
- Publisher site
- See Article on Publisher Site
Abstract
Heterobilayers consisting of MoSe2 and WSe2 monolayers can host optically bright interlayer excitons with intriguing properties such as ultralong lifetimes and pronounced circular polarization of their photoluminescence due to valley polarization, which can be induced by circularly polarized excitation or applied magnetic fields. Here, we report on the observation of an intrinsic valley-magnetophonon resonance for localized interlayer excitons promoted by invervalley hole scattering. It leads to a resonant increase of the photoluminescence polarization degree at the same field of 24.2 Tesla for H-type and R-type stacking configurations despite their vastly different excitonic energy splittings. As a microscopic mechanism of the hole intervalley scattering we identify the scattering with chiral TA phonons of MoSe2 between excitonic states mixed by the long-range electron hole exchange interaction.
Journal
2D Materials – IOP Publishing
Published: Oct 1, 2022
Keywords: excitons; transition metal dichalcogenide; heterobilayer; magnetophonon resonance; photoluminescence; intervalley scattering