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arXiv · 0803.3975

STM images of sub-surface Mn atoms in GaAs: evidence of hybridization of surface and impurity states

J. -M. Jancu·J. -Ch. Girard·M. Nestoklon·A. Lemaitre·F. Glas·Z. Z. Wang
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Abstract

We prove that scanning tunneling microscopy (STM) images of sub-surface Mn atoms in GaAs are formed by hybridization of the impurity state with intrinsic surface states. They cannot be interpreted in terms of bulk-impurity wavefunction imaging. High atomic resolution images obtained using a low-temperature apparatus are compared with advanced, parameter-free tight-binding simulations accounting for both the buckled (110) surface and vacuum electronic properties.

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J. -M. Jancu, J. -Ch. Girard, M. Nestoklon, A. Lemaitre, F. Glas, Z. Z. Wang. 2008-03-27. STM images of sub-surface Mn atoms in GaAs: evidence of hybridization of surface and impurity states. https://doi.org/10.1103/physrevlett.101.196801

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