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HL: Fachverband Halbleiterphysik
HL 3: Poster Session I
HL 3.23: Poster
Montag, 27. September 2021, 10:00–13:00, P
Electric field manipulation of the Zeeman splitting in van der Waals heterostructures — •Paulo E. Faria Junior and Jaroslav Fabian — University of Regensburg, Regensburg, Germany
Under external magnetic fields, the interplay of spin and orbital angular momenta drives the Zeeman splitting, often encoded by the effective g-factors. Here, we explore the electric field control of g-factors in transition metal dichalcogenides (TMDCs) van der Waals heterostructures (vdWHs) of MoSe2 and WSe2. Using a full ab initio approach for the electronic structure and g-factors, we show that external electric fields introduce strong interlayer hybridization with robust signatures in the g-factors of interlayer and intralayer excitons. Furthermore, different interlayer exciton species can be identified by their characteristic dependence with respect to the electric field, an important information to disentangle the optical spectra observed in experiments. In summary, our study provides fundamental insight on the electric field manipulation of g-factors in TMDC-based vdWHs, benchmarking the relevant physics that must be included to investigate moiré excitons. Supported by SFB 1277 and SPP 2244.