1. A method for atomic-level noncontact thermometry with electron energy distribution
- Author
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Ikuo Kinoshita, Eiichi Kobayashi, Kohei Ouchi, Chiharu Tsukada, and Juntaro Ishii
- Subjects
Physics and Astronomy (miscellaneous) ,Chemistry ,Photoemission spectroscopy ,Gaussian ,Resolution (electron density) ,General Engineering ,Analytical chemistry ,General Physics and Astronomy ,02 engineering and technology ,Thermodynamic temperature ,021001 nanoscience & nanotechnology ,symbols.namesake ,Distribution (mathematics) ,020401 chemical engineering ,symbols ,0204 chemical engineering ,Atomic physics ,0210 nano-technology ,Linear combination ,Energy (signal processing) ,Diode - 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.
- Published
- 2017
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