Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5338
Title: Cleavage induced rows of missing atoms on ZnTe (110) surface
Authors: Çelebi, Cem
Arı, Ozan
Senger, Ramazan Tuğrul
Çelebi, Cem
Arı, Ozan
Senger, Ramazan Tuğrul
Izmir Institute of Technology. Physics
Keywords: Scanning tunneling microscopy
Vacancies
Semiconductors
Calculations
Issue Date: Feb-2013
Publisher: American Physical Society
Source: Çelebi, C., Arı, O., and Senger, T. (2013). Cleavage induced rows of missing atoms on ZnTe (110) surface. Physical Review B - Condensed Matter and Materials Physics. 87(8). doi:10.1103/PhysRevB.87.085308
Abstract: Cleavage induced rows of linear vacancy structures on p-doped ZnTe (110) surface are studied at room temperature by using cross-sectional scanning tunneling microscopy (X-STM). The oscillating contrast superimposed on the Te-driven occupied states neighboring to the vacancy cores are characterized at the atomic scale in order to determine the type of the missing component on the ZnTe surface matrix. We identify three major intensity distributions associated with different vacancy states. The X-STM images of three possible configurations comprising Zn only, Te only, and ZnTe binary vacancy structures on the ZnTe surface are modeled by using ab initio density functional theory calculations. The comparison of the X-STM measurements of each individual vacancy state to the corresponding theoretical simulation showed that unlike the Te vacancy, which leads to a local depression, the absence of Zn only or ZnTe binary gives rise to hillock features on the neighboring Te states of the ZnTe (110) cleaved surface. The theoretical STM images calculated for an undoped ZnTe crystal imply that possible doping-related effects on vacancy-induced features can be disregarded for interpreting the experimentally observed vacancy structures in our samples.
URI: https://doi.org/10.1103/PhysRevB.87.085308
http://hdl.handle.net/11147/5338
ISSN: 1098-0121
1098-0121
1550-235X
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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