Spatial structure of an individual Mn acceptor in GaAs

A.M. Yakunin; A.Y. Silov; P.M. Koenraad; J.H. Wolter; W. Roy, van; J. De Boeck; J.-M. Tang; M.E. Flatté

doi:10.1103/PhysRevLett.92.216806

Spatial structure of an individual Mn acceptor in GaAs

A.M. Yakunin, A.Y. Silov, P.M. Koenraad, J.H. Wolter, W. Roy, van, J. De Boeck, J.-M. Tang, M.E. Flatté

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Abstract

The wave function of a hole bound to an individual Mn acceptor in GaAs is spatially mapped by scanning tunneling microscopy at room temperature and an anisotropic, crosslike shape is observed. The spatial structure is compared with that from an envelope-function, effective mass model and from a tight-binding model. This demonstrates that anisotropy arising from the cubic symmetry of the GaAs crystal produces the crosslike shape for the hole wave function. Thus the coupling between Mn dopants in GaMnAs mediated by such holes will be highly anisotropic

Original language	English
Article number	216806
Pages (from-to)	216806-1/4
Number of pages	4
Journal	Physical Review Letters
Volume	92
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.92.216806
Publication status	Published - 2004

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abstract = "The wave function of a hole bound to an individual Mn acceptor in GaAs is spatially mapped by scanning tunneling microscopy at room temperature and an anisotropic, crosslike shape is observed. The spatial structure is compared with that from an envelope-function, effective mass model and from a tight-binding model. This demonstrates that anisotropy arising from the cubic symmetry of the GaAs crystal produces the crosslike shape for the hole wave function. Thus the coupling between Mn dopants in GaMnAs mediated by such holes will be highly anisotropic",

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AU - Silov, A.Y.

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AU - Roy, van, W.

AU - De Boeck, J.

AU - Tang, J.-M.

AU - Flatté, M.E.

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AB - The wave function of a hole bound to an individual Mn acceptor in GaAs is spatially mapped by scanning tunneling microscopy at room temperature and an anisotropic, crosslike shape is observed. The spatial structure is compared with that from an envelope-function, effective mass model and from a tight-binding model. This demonstrates that anisotropy arising from the cubic symmetry of the GaAs crystal produces the crosslike shape for the hole wave function. Thus the coupling between Mn dopants in GaMnAs mediated by such holes will be highly anisotropic

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Spatial structure of an individual Mn acceptor in GaAs

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