2004/06/06 by A. M. Yakunin, A. Yu. Silov, P. M. Koenraad +3
Physics and Astronomy · #cond-mat.mtrl-sci
paper · pdf · doi:10.1016/j.spmi.2004.03.055
published as Superlattices and Microstructures 34, 539-545 (2003) · Proceedings of the SIMD-4 conference. Hawaii, USA (December 1-5, 2003)
arxiv created 2004/06/06 · arxiv updated 2009/12/01
An individual Mn acceptor in GaAs is mapped by Cross-sectional Scanning Tunneling Microscopy (X-STM) at room temperature and a strongly anisotropic shape of the acceptor state is observed. An acceptor state manifests itself as a cross-like feature which we attribute to a valence hole weakly bound to the Mn ion forming the (Mn2+3d5+hole) complex. We propose that the observed anisotropy of the Mn acceptor wave-function is due to the d-wave present in the acceptor ground state.