Temperature-dependent AC conductivities of BiCuOCh (Ch = Te, Se) in the terahertz range

Hee Jun Shin; Tae Ho An; Young Soo Lim; Chan Park; Jeong Pil Song; Joo Hiuk Son

doi:10.1016/j.cap.2016.07.016

Temperature-dependent AC conductivities of BiCuOCh (Ch = Te, Se) in the terahertz range

Hee Jun Shin, Tae Ho An, Young Soo Lim, Chan Park, Jeong Pil Song, Joo Hiuk Son

Department of Physics

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

5 Scopus citations

Abstract

We investigated the temperature-dependent optical conductivity of BiCuOCh (Ch = Te, Se) in the terahertz (THz) region. The optical conductivity of BiCuOSe increases with the temperature from 297 to 600 K, whereas that of BiCuOTe exhibits a different trend. In the THz frequency range of 0.4–1.6 THz, these materials show a conductivity increase as the frequency increases. The conductivity of BiCuOTe is greater than that of BiCuOSe. These results can be explained by a two-band structure model and the carrier-carrier scattering process. In addition, we fitted the experimental results to the Drude–Smith model to explain non-Drude like behavior. The dielectric constant of BiCuOTe depends on the frequency rather than on the temperature, whereas that of BiCuOSe depends on the temperature.

Original language	English
Pages (from-to)	1303-1307
Number of pages	5
Journal	Current Applied Physics
Volume	16
Issue number	10
DOIs	https://doi.org/10.1016/j.cap.2016.07.016
State	Published - 1 Oct 2016

Keywords

Conductivity
Dielectric constant
Terahertz spectroscopy
Thermoelectric

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10.1016/j.cap.2016.07.016

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title = "Temperature-dependent AC conductivities of BiCuOCh (Ch = Te, Se) in the terahertz range",

abstract = "We investigated the temperature-dependent optical conductivity of BiCuOCh (Ch = Te, Se) in the terahertz (THz) region. The optical conductivity of BiCuOSe increases with the temperature from 297 to 600 K, whereas that of BiCuOTe exhibits a different trend. In the THz frequency range of 0.4–1.6 THz, these materials show a conductivity increase as the frequency increases. The conductivity of BiCuOTe is greater than that of BiCuOSe. These results can be explained by a two-band structure model and the carrier-carrier scattering process. In addition, we fitted the experimental results to the Drude–Smith model to explain non-Drude like behavior. The dielectric constant of BiCuOTe depends on the frequency rather than on the temperature, whereas that of BiCuOSe depends on the temperature.",

keywords = "Conductivity, Dielectric constant, Terahertz spectroscopy, Thermoelectric",

author = "Shin, \{Hee Jun\} and An, \{Tae Ho\} and Lim, \{Young Soo\} and Chan Park and Song, \{Jeong Pil\} and Son, \{Joo Hiuk\}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

month = oct,

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doi = "10.1016/j.cap.2016.07.016",

language = "English",

volume = "16",

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journal = "Current Applied Physics",

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TY - JOUR

T1 - Temperature-dependent AC conductivities of BiCuOCh (Ch = Te, Se) in the terahertz range

AU - Shin, Hee Jun

AU - An, Tae Ho

AU - Lim, Young Soo

AU - Park, Chan

AU - Song, Jeong Pil

AU - Son, Joo Hiuk

PY - 2016/10/1

Y1 - 2016/10/1

N2 - We investigated the temperature-dependent optical conductivity of BiCuOCh (Ch = Te, Se) in the terahertz (THz) region. The optical conductivity of BiCuOSe increases with the temperature from 297 to 600 K, whereas that of BiCuOTe exhibits a different trend. In the THz frequency range of 0.4–1.6 THz, these materials show a conductivity increase as the frequency increases. The conductivity of BiCuOTe is greater than that of BiCuOSe. These results can be explained by a two-band structure model and the carrier-carrier scattering process. In addition, we fitted the experimental results to the Drude–Smith model to explain non-Drude like behavior. The dielectric constant of BiCuOTe depends on the frequency rather than on the temperature, whereas that of BiCuOSe depends on the temperature.

AB - We investigated the temperature-dependent optical conductivity of BiCuOCh (Ch = Te, Se) in the terahertz (THz) region. The optical conductivity of BiCuOSe increases with the temperature from 297 to 600 K, whereas that of BiCuOTe exhibits a different trend. In the THz frequency range of 0.4–1.6 THz, these materials show a conductivity increase as the frequency increases. The conductivity of BiCuOTe is greater than that of BiCuOSe. These results can be explained by a two-band structure model and the carrier-carrier scattering process. In addition, we fitted the experimental results to the Drude–Smith model to explain non-Drude like behavior. The dielectric constant of BiCuOTe depends on the frequency rather than on the temperature, whereas that of BiCuOSe depends on the temperature.

KW - Conductivity

KW - Dielectric constant

KW - Terahertz spectroscopy

KW - Thermoelectric

UR - https://www.scopus.com/pages/publications/84981749592

U2 - 10.1016/j.cap.2016.07.016

DO - 10.1016/j.cap.2016.07.016

M3 - Article

AN - SCOPUS:84981749592

SN - 1567-1739

VL - 16

SP - 1303

EP - 1307

JO - Current Applied Physics

JF - Current Applied Physics

IS - 10

ER -

Temperature-dependent AC conductivities of BiCuOCh (Ch = Te, Se) in the terahertz range

Abstract

Keywords

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