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A method for atomic-level noncontact thermometry with electron energy distribution

Authors :
Ikuo Kinoshita
Eiichi Kobayashi
Kohei Ouchi
Chiharu Tsukada
Juntaro Ishii
Source :
Japanese Journal of Applied Physics. 56:048004
Publication Year :
2017
Publisher :
IOP Publishing, 2017.

Abstract

We devised a new method of determining the temperatures of materials with their electron-energy distributions. The Fermi–Dirac distribution convoluted with a linear combination of Gaussian and Lorentzian distributions was fitted to the photoelectron spectrum measured for the Au(110) single-crystal surface at liquid N2-cooled temperature. The fitting successfully determined the surface-local thermodynamic temperature and the energy resolution simultaneously from the photoelectron spectrum, without any preliminary results of other measurements. The determined thermodynamic temperature was 99 ± 2.1 K, which was in good agreement with the reference temperature of 98.5 ± 0.5 K measured using a silicon diode sensor attached to the sample holder.

Details

ISSN :
13474065 and 00214922
Volume :
56
Database :
OpenAIRE
Journal :
Japanese Journal of Applied Physics
Accession number :
edsair.doi...........afbc21e26e5eb1ae23bde4b834140b77
Full Text :
https://doi.org/10.7567/jjap.56.048004