Ellipsometric spectroscopy of liquid selenium-thallium mixtures

Kensuke Fujii; Yoshinori Ohmasa; Shin Takahashi; Takuya Katayama; Wataru Makino; Makoto Yao

doi:10.1143/JPSJ.77.044708

Ellipsometric spectroscopy of liquid selenium-thallium mixtures

Kensuke Fujii, Yoshinori Ohmasa, Shin Takahashi, Takuya Katayama, Wataru Makino, Makoto Yao

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Complex dielectric function for liquid Se-Tl mixtures has been obtained by ellipsometric measurements at temperatures between 300 and 500°C. The optical gap decreases rapidly with increasing Tl-concentration in the low concentration region less than 15 at.% Tl, while it remains nearly constant for higher concentrations up to 40 at.% Tl. A long-standing problem of the discrepancy between the activation energies of the electrical conductivity and thermopower can be resolved by considering the temperature dependence of the energy gap precisely.

Original language	English
Article number	044708
Journal	journal of the physical society of japan
Volume	77
Issue number	4
DOIs	https://doi.org/10.1143/JPSJ.77.044708
Publication status	Published - 2008 Apr
Externally published	Yes

Keywords

Conductivity
Dielectric function
Ellipsometry
Energy gap
Liquid
Mixture
Selenium
Thallium
Thermopower

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Ellipsometric spectroscopy of liquid selenium-thallium mixtures",

abstract = "Complex dielectric function for liquid Se-Tl mixtures has been obtained by ellipsometric measurements at temperatures between 300 and 500°C. The optical gap decreases rapidly with increasing Tl-concentration in the low concentration region less than 15 at.% Tl, while it remains nearly constant for higher concentrations up to 40 at.% Tl. A long-standing problem of the discrepancy between the activation energies of the electrical conductivity and thermopower can be resolved by considering the temperature dependence of the energy gap precisely.",

keywords = "Conductivity, Dielectric function, Ellipsometry, Energy gap, Liquid, Mixture, Selenium, Thallium, Thermopower",

author = "Kensuke Fujii and Yoshinori Ohmasa and Shin Takahashi and Takuya Katayama and Wataru Makino and Makoto Yao",

year = "2008",

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doi = "10.1143/JPSJ.77.044708",

language = "English",

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T1 - Ellipsometric spectroscopy of liquid selenium-thallium mixtures

AU - Fujii, Kensuke

AU - Ohmasa, Yoshinori

AU - Takahashi, Shin

AU - Katayama, Takuya

AU - Makino, Wataru

AU - Yao, Makoto

PY - 2008/4

Y1 - 2008/4

N2 - Complex dielectric function for liquid Se-Tl mixtures has been obtained by ellipsometric measurements at temperatures between 300 and 500°C. The optical gap decreases rapidly with increasing Tl-concentration in the low concentration region less than 15 at.% Tl, while it remains nearly constant for higher concentrations up to 40 at.% Tl. A long-standing problem of the discrepancy between the activation energies of the electrical conductivity and thermopower can be resolved by considering the temperature dependence of the energy gap precisely.

AB - Complex dielectric function for liquid Se-Tl mixtures has been obtained by ellipsometric measurements at temperatures between 300 and 500°C. The optical gap decreases rapidly with increasing Tl-concentration in the low concentration region less than 15 at.% Tl, while it remains nearly constant for higher concentrations up to 40 at.% Tl. A long-standing problem of the discrepancy between the activation energies of the electrical conductivity and thermopower can be resolved by considering the temperature dependence of the energy gap precisely.

KW - Conductivity

KW - Dielectric function

KW - Ellipsometry

KW - Energy gap

KW - Liquid

KW - Mixture

KW - Selenium

KW - Thallium

KW - Thermopower

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JF - Journal of the Physical Society of Japan

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Ellipsometric spectroscopy of liquid selenium-thallium mixtures

Abstract

Keywords

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