Cr 3d Surface and Bulk States in Sn_{1-x}Cr_{x}Te/Cr Crystals

• Authors: E. Guziewicz , K. Szamota-Sadowska , B.J. Kowalski , E. Grodzicka , T. Story , B.A. Orłowski , R.L. Johnson
• Languages of publication: EN

Abstracts

EN

We report a new approach to investigate metal-semiconductor interface formation. Photoemission spectroscopy was applied in order to investigate the clean surface of a Sn_{0.97}Cr_{0.03} Te crystal and to observe its changes under sequential deposition of small amounts of Cr atoms. In order to analyse the Cr 3d contribution to the valence band, the Fano-type resonance tuned to the Cr 3p-3d transition was used. The experiment was designed to follow the Sn_{0.97}Cr_{0.03} Te/Cr interface formation process. At the clean Sn_{0.97}Cr_{0.03}Te surface, the Cr 3d states contribution to the valence band was found to be positioned 0.8 eV below the Fermi level. After the Cr deposition processes the contribution shifted to a higher binding energy and another contribution 5.8 eV below the Fermi level was also observed.

Keywords

EN

68.35.Fx; 79.60.-i

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1997
• Volume: 91
• Issue: 4
• Pages: 783-787

Dates

published

1997-04

Contributors

author

E. Guziewicz

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland

author

K. Szamota-Sadowska

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland

author

B.J. Kowalski

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland

author

E. Grodzicka

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland

author

T. Story

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland

author

B.A. Orłowski

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland

author

R.L. Johnson

• Universität Hamburg, II Institut für Experimentalphysik, Luruper Chaussee 149, 22761 Hamburg, Germany