DigitalCommons@University of Nebraska - Lincoln - Ning Wu, David Wisbey, Takashi Komesu, Z. X. Yu, M. Manno, L. Wang, C. Leighton, and Peter Dowben: The kinetic energy dependent effective Debye temperature for CoS<sub>2</sub> (100)

Research Papers in Physics and Astronomy

Peter Dowben Publications

Title

The kinetic energy dependent effective Debye temperature for CoS₂ (100)

Authors

Ning Wu, University of Nebraska - Lincoln
David Wisbey, University of Nebraska - Lincoln
Takashi Komesu, University of Nebraska - Lincoln
Z. X. Yu, School of Physics & Engineering, Zhongshan University, Guangzhou 510275, People’s Republic of China
M. Manno, University of Minnesota, Minneapolis, MN
L. Wang, University of Minnesota, Minneapolis, MN
C. Leighton, University of Minnesota, Minneapolis, MN
Peter Dowben, University of Nebraska - Lincoln

Document Type

Article

Date of this Version

January 2008

Comments

Abstract

The effective Debye temperatures of the highly spin-polarized material CoS₂ were measured using temperature dependent low energy electron diffraction and shown to be dependent upon electron kinetic energy. The normal dynamic motion of the (100) surface results in the effective surface Debye temperature of 326 ± 9 K compared to a bulk Debye temperature of 612 ± 24 K. Similar values for the bulk Debye temperature have been obtained through LEED I(V) analysis, core level photoemission with a lower value for the bulk Debye temperature found from heat capacity measurements.

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