SKM 2021 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 5: 2D semiconductors and van der Waals heterostructures I (joint session HL/DS)
HL 5.2: Vortrag
Montag, 27. September 2021, 14:00–14:15, H4
Bosonic condensation of exciton-polaritons in an atomically thin crystal — •Carlos Anton-Solanas1,2, Maximilian Waldherr1, Martin Klaas1, Holger Suchomel1, Tristan H. Harder1, Hui Cai3, Evgeny Sedov4, Sebastian Klembt1, Alexey V. Kavokin4, Sefaattin Tongay5, Kenji Watanabe6, Takashi Taniguchi6, Sven Hoefling1, and Christian Schneider2 — 1Univ. Wuerzburg, Germany — 2Univ. Oldenburg, Germany — 3Univ. California, USA — 4Westlake Univ., China — 5Arizona State Univ., USA — 6Nat. Institute for Materials Science, Japan
Semiconducting monolayer crystals have emerged as a new platform for studies of tightly bound excitons and many-body excitations in ultimately thin materials. Their giant dipole coupling to optical fields makes them very appealing for (nano-) photonic devices, and for fundamental investigations in the framework of cavity quantum electrodynamics.
Our experiments demonstrate the strong light-matter coupling and, for the first time, the bosonic condensation of exciton-polaritons in an atomically thin layer of MoSe2 coupled to a hybrid micro-cavity [1].
We demonstrate the emergence of long-range first-order spatial coherence, via interferometric g(1)(τ) measures, and we have investigated the Zeeman splitting effects of condensed polaritons under strong magnetic fields.
[1] Anton-Solanas, C., Waldherr, M., Klaas, M. et al. Bosonic condensation of exciton polaritons in an atomically thin crystal. Nat. Mater. (2021).