DPG Phi
Verhandlungen
Verhandlungen
DPG

Dresden 2017 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

HL: Fachverband Halbleiterphysik

HL 63: Poster: Quantum Dots and Optics

HL 63.31: Poster

Wednesday, March 22, 2017, 15:00–19:00, P1A

Probe laser induced spin polarization of donor bound electrons in 28Si:P — •Michael Beck1, Nikolay Abrosimov2, Jens Hübner1, and Michael Oestreich11Institut für Festkörperphysik, Leibniz Universität Hannover, Appelstrasse 2, D-30167 Hannover — 2Leibniz Institut für Kristallzüchtung, Max-Born-Strasse 2, D-12489 Berlin

The decoupling of donor atoms from the nuclear spin bath of the host lattice in isotopically enriched silicon leads to very long coherence times of donor electron spins [1]. The exceptional purity of this system also entails an ultra narrow optical linewidth and well resolvable hyperfine splitting of the donor bound exciton transition [2] which is commonly used to probe spin properties of the localized electron ensemble [3]. We employ Faraday rotation spectroscopy and observe a strong spin polarization caused by the linearly polarized probe laser only [4]. The findings are explained by supplemental phase modulation absorption spectroscopy which reveals the evolution of the hyperfine coupled states in small magnetic fields.

[1] A.M. Tyryshkin et al., Nature Matter. 11, 143, (2012).
M. L. W. Thewalt et al. J. Appl. Phys. 101, 081724 (2007).
J. Hübner et al., Phys. Stat. Solidi (B), 251, 1824 (2014).
[4] A. Yang et al., Phys. Rev. Lett. 102, 257401 (2009).

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2017 > Dresden