Mainz 2026 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 73: Quantum Technologies – Solid State Systems

Q 73.5: Vortrag

Freitag, 6. März 2026, 12:15–12:30, P 7

Effect of Heterostrain on the Photophysical Properties of WSe2/MoSe2 Heterobilayers — •Hilal Korkut and Ibrahim Sarpkaya — Bilkent University, UNAM ( National Nanotechnology Research Center), Ankara, Turkey

Transition metal dichalcogenides have attracted broad interest due to their exceptional mechanical, electronic, and optical properties1. Owing to their long lifetime, permanent out-of-electric dipole, and high tunability provide an excellent platform for exploring correlated interactions and valley-dependent physics2. In this talk, I will present how heterostrain modifies the low-temperature optical responses of interlayer excitons in WSe2/MoSe2 heterobilayers and demonstrate how strain can be utilized as a means of controlling these properties. References 1.*Wang, G. et al. Colloquium: Excitons in atomically thin transition metal dichalcogenides. Rev. Mod. Phys. 90, 21001 (2018). 2.*Durmuş, M. A., Demiralay, K., Khan, M. M., Atalay, Ş. E. & Sarpkaya, I. Prolonged dephasing time of ensemble of moiré-trapped interlayer excitons in WSe2-MoSe2 heterobilayers. npj 2D Mater. Appl. 2023 71 7, 1*8 (2023).

Keywords: 2D Materials; Interlayer Excitons; TMDC Heterostructures; Heterostrain; Spin-Valley Coupling