Details

Autor(en) / Beteiligte

• Yakunin, A M
• Silov, A Yu
• Koenraad, P M
• Wolter, J H
• Van Roy, W
• De Boeck, J
• Tang, J-M
• Flatté, M E

Titel

Spatial structure of an individual Mn acceptor in GaAs

Ist Teil von

• Physical review letters, 2004-05, Vol.92 (21), p.216806-216806, Article 216806

Ort / Verlag

United States

Erscheinungsjahr

2004

Quelle

American Physical Society

Beschreibungen/Notizen

• 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.