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research
Interplay of Electron and Nuclear Spin Noise in n -Type GaAs
Authors
Fabian Berski
Mikhail Glazov
+4 more
Jens Hübner
Arne Ludwig
Michael Oestreich
A.D. Wieck
Publication date
1 January 2015
Publisher
College Park, MD : American Physical Society
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Abstract
We present spin-noise spectroscopy measurements on an ensemble of donor-bound electrons in ultrapure GaAs:Si covering temporal dynamics over 6 orders of magnitude from milliseconds to nanoseconds. The spin-noise spectra detected at the donor-bound exciton transition show the multifaceted dynamical regime of the ubiquitous mutual electron and nuclear spin interaction typical for III-V-based semiconductor systems. The experiment distinctly reveals the finite Overhauser shift of an electron spin precession at zero external magnetic field and a second contribution around zero frequency stemming from the electron spin components parallel to the nuclear spin fluctuations. Moreover, at very low frequencies, features related with time-dependent nuclear spin fluctuations are clearly resolved making it possible to study the intricate nuclear spin dynamics at zero and low magnetic fields. The findings are in agreement with the developed model of electron and nuclear spin noise. © 2015 American Physical Society
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info:doi/10.1103%2Fphysrevlett...
Last time updated on 01/04/2019
Institutionelles Repositorium der Leibniz Universität Hannover
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Last time updated on 21/11/2017