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Spin-orientation-dependent spatial structure of a magnetic acceptor state in a zinc-blende semiconductor
Journal article   Open access   Peer reviewed

Spin-orientation-dependent spatial structure of a magnetic acceptor state in a zinc-blende semiconductor

Jian-Ming Tang and Michael E Flatte
Physical review. B, Condensed matter and materials physics, Vol.72(16), pp.161315.1-161315.4
10/01/2005
DOI: 10.1103/PhysRevB.72.161315

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Abstract

The spin orientation of a magnetic dopant in a zinc-blende semiconductor strongly influences the spatial structure of an acceptor state bound to the dopant. The acceptor state has a roughly oblate shape with the short axis aligned with the dopant's core spin. For a Mn dopant in GaAs the local density of states at a site 8 Å away from the dopant can change by 90% when the Mn spin orientation changes. These changes in the local density of states could be probed by scanning tunneling microscopy to infer the dopant's spin orientation. © 2005 The American Physical Society.
Physics Condensed matter: electronic structure, electrical, magnetic, and optical properties Electron density of states and band structure of crystalline solids Electron states Exact sciences and technology Magnetic properties and materials Magnetic semiconductors Semiconductor compounds Studies of specific magnetic materials

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