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HL: Fachverband Halbleiterphysik

HL 9: Poster 1

HL 9.39: Poster

Montag, 23. März 2009, 14:30–17:00, P2

Spin Noise Spectroscopy on Donors in GaAs — •Hannes Bernien, Georg Müller, Michael Römer, Jens Hübner, and Michael Oestreich — Institute for Solid State Physics, Gottfried Wilhelm Leibniz University Hannover, Appelstr. 2, 30167 Hannover, Germany

In recent experiments spin noise spectroscopy (SNS) has proven to be a very sensitive technique to study electron spin dynamics in semiconductors at thermal equilibrium^[1]. Here we present SNS-measurements on donor bound electrons in very low doped bulk GaAs. In this environment the donors do not interact with each other and form artificial atoms. We discuss the detection of single donor bound electron spins, which should have extremely long spin relaxation times compared to ensemble spin relaxation times. In further experiments the electron bound to the donor will be used to probe and study the local nuclear magnetic field at the donor site.
[1] M. Römer. J. Hübner, and M. Oestreich, Rev. Sci. Instrum. 78, 103903 (2007)