Spin noise spectroscopy of ZnO

H. Horn (1) , F. Berski (1) , Andrea Balocchi (2) , Xavier Marie (2) , M. Mansur-Al-Suleiman (3) , A. Bakin (3) , A. Waag (3) , J. Hübner (1) , M. Oestreich (1)

1 Leibniz Universität Hannover=Leibniz University Hannover
2 LPCNO - Laboratoire de physique et chimie des nano-objets
3 Technische Universität Braunschweig = Technical University of Braunschweig [Braunschweig]

We investigate the thermal equilibrium dynamics of electron spins bound to donors in nanoporous ZnO by optical spin noise spectroscopy. The spin noise spectra reveal two noise contributions: A weak spin noise signal from undisturbed localized donor electrons with a dephasing time of 24 ns due to hyperfine interaction and a strong spin noise signal with a spin dephasing time of 5 ns which we attribute to localized donor electrons which interact with lattice defects.

Mots clés: Nanomaterials; Spin noise spectroscopy; Electronic noise; Hyperfine structure; Metal oxides; Acoustic noise measurement; Equilibrium thermodynamics; Crystallographic defects

Domaines: Chimie

H. Horn, F. Berski, Andrea Balocchi, Xavier Marie, M. Mansur-Al-Suleiman, et al.. Spin noise spectroscopy of ZnO. THE PHYSICS OF SEMICONDUCTORS: Proceedings of the 31st International Conference on the Physics of Semiconductors (ICPS) 2012, Jul 2012, Zurich, Switzerland. pp.69-70. ⟨hal-02050484⟩