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

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.

References in corpus (2)

• Atom-by-Atom Substitution of Mn in GaAs and Visualization of their Hole-Mediated Interactions
• Spatial structure of an individual Mn acceptor in GaAs

Cited by in corpus (3)

• Mapping the wavefunction of transition metal acceptor states in the GaAs surface
• Bringing ultimate depth to scanning tunnelling microscopy: deep subsurface vision of buried nano-objects in metals
• Atomic scale visualization of the p-d hybridization in III-V semiconductors doped with transition metal impurities