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arXiv · 2511.02524

Theory of In-Plane-Magnetic-Field-Dependent Excitonic Spectra in Atomically Thin Semiconductors

Michiel Snoeken·Paul Steeger·Robert Schmidt·Steffen Michaelis de Vasconcellos·Rudolf Bratschitsch·Andreas Knorr·Henry Mittenzwey
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Abstract

The linear absorption spectrum of excitons in TMDC monolayers under the influence of an in-plane magnetic field is theoretically studied. We demonstrate that in-plane magnetic fields induce a hybridization between spin-bright and spin-dark exciton transitions, resulting in a brightening of spin-dark excitons. We analytically investigate spectral features including resonance energy shifts, broadening and amplitudes ratios. In particular, for a MoSe$_2$ monolayer with radiatively-limited linewidth, we find a complex interplay of dark-bright splitting and linewidth difference of both involved spin-bright and spin-dark excitons.

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Michiel Snoeken, Paul Steeger, Robert Schmidt, Steffen Michaelis de Vasconcellos, Rudolf Bratschitsch, Andreas Knorr, Henry Mittenzwey. 2025-11-04. Theory of In-Plane-Magnetic-Field-Dependent Excitonic Spectra in Atomically Thin Semiconductors. https://arxiv.org/abs/2511.02524

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