The Ge(110) surface has been investigated by core-level and valence band (VB) photoemission spectroscopy as a function of temperature starting from the room temperature c(8×10) reconstructed surface up to 1196 K. Evidence of a phase transition is found at about 750 ± 50 K from core-level and valence band data analysis. VB photoemission shows that above 750 K the Ge(110) surface acquires increasing metallic character up to 1110 K, where a sudden, intense jump of the emission intensity at the Fermi level is observed. At higher temperatures up to 1196 K, a finite and constant density of states is observed, indicating the presence of a metallic surface layer. © 1999 Elsevier Science B.V. All rights reserved.
|Pages (from-to)||423 - 427|
|Number of pages||5|
|Journal||Journal of Electron Spectroscopy and Related Phenomena|
|Publication status||Published - 1999|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Physical and Theoretical Chemistry
Santoni, A., Laine, A. D., Petaccia, L., Dhanak, V. R., Sancrotti, M., & Modesti, S. (1999). High-temperature photoemission spectroscopy of the Ge(110) surface and high-temperature surface order-disorder phase transitions. Journal of Electron Spectroscopy and Related Phenomena, 101-103, 423 - 427.