AVS 49th International Symposium
    Surface Science Thursday Sessions
       Session SS+EL-ThM

Paper SS+EL-ThM10
The Anomalous Effective Surface Debye Temperature of ErAs(100)

Thursday, November 7, 2002, 11:20 am, Room C-110

Session: Structure of Semiconductor Surfaces & Interfaces
Presenter: T. Komesu, University of Nebraska-Lincoln
Authors: T. Komesu, University of Nebraska-Lincoln
H.K. Jeong, University of Nebraska-Lincoln
P.A. Dowben, University of Nebraska-Lincoln
B.D. Schultz, University of Minnesota
C.J. Palmstrom, University of Minnesota
Correspondent: Click to Email
We have recently explored the surface electronic structure of ErAs(100), as well as the compositionally stability, but the vibrational modes are a key contribution to both electronic structure and compositional stability. Consistent with a surface electronic structure different from the bulk, here we show that the surface vibrational modes are different from the bulk from our estimates of surface and bulk Debye temperature using LEED (low energy electron diffraction) and XPS (X-ray photoemission spectroscopy). This could contribute to the very large temperatures dependence of transport effects across ErAs interfaces.