SKM 2023 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 15: Spin phenomena in semiconductors
HL 15.2: Vortrag
Dienstag, 28. März 2023, 09:45–10:00, POT 251
Mode locking of hole spin coherences in CsPb(Cl,Br)3 perovskite nanocrystals — •Erik Kirstein1, Nataliia E. Kopteva1, Dmitri R. Yakovlev1,2,3, Evgeny A. Zhukov1,2, Elena V. Kolobkova4,5, Maria S. Kuznetsova6, Vasily V. Belykh3, Irina A. Yugova6, Mikhail M. Glazov2, Manfred Bayer1, and Alex Greilich1 — 1Experimental Physics 2, Department of Physics, TU Dortmund, 44227 Dortmund, Germany — 2St. Petersburg, Russia — 3Moscow, Russia — 4St. Petersburg, Russia — 5St. Petersburg, Russia — 6St. Petersburg, Russia
The spin physics of perovskite nanocrystals is attracting increasing attention, both for fundamental studies and spintronic applications. Here, stable CsPb(Cl0.5Br0.5)3 lead halide perovskite nanocrystals embedded in a fluorophosphate glass matrix are studied by time-resolved optical spectroscopy to unravel the coherent spin dynamics of holes and their interaction with nuclear spins of the 207Pb isotope. We demonstrate the spin mode locking effect and nuclear induced frequency focussing leading to the synchronization of the hole spin Larmor precession frequencies of the nanocrystal ensemble.