Localized electronic defects on the surface of a 4 monolayer (ML) thin MgO(001) film deposited on Ag(001) have been investigated by low-temperature scanning tunneling microscopy and spectroscopy. Depending on the location of the defect, we observe for the first time different defect energy levels in the band gap of MgO. The charge state of defects can be manipulated by interactions with the scanning tunneling microscope tip. Comparison with ground state energy levels of color centers on the MgO surface obtained from embedded cluster calculations corroborates the assignment of the defects to singly and doubly charged color centers.

Sterrer, M., Heyde, M., Novicki, M., Nilius, N., Risse, T., Rust, H., et al. (2006). Identification of color centers on MgO(001) thin films with scanning tunneling microscopy. JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL, 110(1), 46-49 [10.1021/jp056306f].

Identification of color centers on MgO(001) thin films with scanning tunneling microscopy

PACCHIONI, GIANFRANCO;
2006

Abstract

Localized electronic defects on the surface of a 4 monolayer (ML) thin MgO(001) film deposited on Ag(001) have been investigated by low-temperature scanning tunneling microscopy and spectroscopy. Depending on the location of the defect, we observe for the first time different defect energy levels in the band gap of MgO. The charge state of defects can be manipulated by interactions with the scanning tunneling microscope tip. Comparison with ground state energy levels of color centers on the MgO surface obtained from embedded cluster calculations corroborates the assignment of the defects to singly and doubly charged color centers.
Articolo in rivista - Articolo scientifico
oxide surfaces, DFT
English
2006
110
1
46
49
none
Sterrer, M., Heyde, M., Novicki, M., Nilius, N., Risse, T., Rust, H., et al. (2006). Identification of color centers on MgO(001) thin films with scanning tunneling microscopy. JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL, 110(1), 46-49 [10.1021/jp056306f].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/45277
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