Infrared study on CeSb under high pressures

S. Kimura; T. Nishi; Y. Mori; Y. Sumida; T. Takahashi; Y. S. Kwon; H. J. Im; H. Kitazawa

doi:10.1016/j.physb.2005.01.032

Infrared study on CeSb under high pressures

S. Kimura, T. Nishi, Y. Mori, Y. Sumida, T. Takahashi, Y. S. Kwon, H. J. Im, H. Kitazawa

Department of Physics and Chemistry

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

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Abstract

The optical reflectivity spectra (R(ω)) of CeSb have been measured at high pressures to investigate the origin of the physical properties appearing under pressures. At 300 K, the pressure dependence of R(ω) revealed that the carrier density proportionally increases with increasing pressure up to 2.5 GPa. At lower temperature, the R(ω) spectrum drastically changes with both temperature and pressure due to the complex magnetic phase diagram. Especially, at 2.5 GPa and 30 K, the R(ω) intensity below 0.2 eV decreases, on the contrary that at around 0.3 eV increases. This result suggests that the density of states near the Fermi level decreases and shifts to the high-energy side.

Original language	English
Pages (from-to)	190-192
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	359-361
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2005.01.032
State	Published - 30 Apr 2005

Bibliographical note

Funding Information:
This work was the joint studies programs of SPring-8 and of the Institute for Molecular Science, and was partially supported by a Grant-in-Aid for Scientific Research from MEXT of Japan.

Keywords

CeSb
Electronic structure
Optical property
Pressure

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10.1016/j.physb.2005.01.032

Cite this

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title = "Infrared study on CeSb under high pressures",

abstract = "The optical reflectivity spectra (R(ω)) of CeSb have been measured at high pressures to investigate the origin of the physical properties appearing under pressures. At 300 K, the pressure dependence of R(ω) revealed that the carrier density proportionally increases with increasing pressure up to 2.5 GPa. At lower temperature, the R(ω) spectrum drastically changes with both temperature and pressure due to the complex magnetic phase diagram. Especially, at 2.5 GPa and 30 K, the R(ω) intensity below 0.2 eV decreases, on the contrary that at around 0.3 eV increases. This result suggests that the density of states near the Fermi level decreases and shifts to the high-energy side.",

keywords = "CeSb, Electronic structure, Optical property, Pressure",

author = "S. Kimura and T. Nishi and Y. Mori and Y. Sumida and T. Takahashi and Kwon, {Y. S.} and Im, {H. J.} and H. Kitazawa",

note = "Funding Information: This work was the joint studies programs of SPring-8 and of the Institute for Molecular Science, and was partially supported by a Grant-in-Aid for Scientific Research from MEXT of Japan.",

year = "2005",

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doi = "10.1016/j.physb.2005.01.032",

language = "English",

volume = "359-361",

pages = "190--192",

journal = "Physica B: Condensed Matter",

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TY - JOUR

T1 - Infrared study on CeSb under high pressures

AU - Kimura, S.

AU - Nishi, T.

AU - Mori, Y.

AU - Sumida, Y.

AU - Takahashi, T.

AU - Kwon, Y. S.

AU - Im, H. J.

AU - Kitazawa, H.

N1 - Funding Information: This work was the joint studies programs of SPring-8 and of the Institute for Molecular Science, and was partially supported by a Grant-in-Aid for Scientific Research from MEXT of Japan.

PY - 2005/4/30

Y1 - 2005/4/30

N2 - The optical reflectivity spectra (R(ω)) of CeSb have been measured at high pressures to investigate the origin of the physical properties appearing under pressures. At 300 K, the pressure dependence of R(ω) revealed that the carrier density proportionally increases with increasing pressure up to 2.5 GPa. At lower temperature, the R(ω) spectrum drastically changes with both temperature and pressure due to the complex magnetic phase diagram. Especially, at 2.5 GPa and 30 K, the R(ω) intensity below 0.2 eV decreases, on the contrary that at around 0.3 eV increases. This result suggests that the density of states near the Fermi level decreases and shifts to the high-energy side.

AB - The optical reflectivity spectra (R(ω)) of CeSb have been measured at high pressures to investigate the origin of the physical properties appearing under pressures. At 300 K, the pressure dependence of R(ω) revealed that the carrier density proportionally increases with increasing pressure up to 2.5 GPa. At lower temperature, the R(ω) spectrum drastically changes with both temperature and pressure due to the complex magnetic phase diagram. Especially, at 2.5 GPa and 30 K, the R(ω) intensity below 0.2 eV decreases, on the contrary that at around 0.3 eV increases. This result suggests that the density of states near the Fermi level decreases and shifts to the high-energy side.

KW - CeSb

KW - Electronic structure

KW - Optical property

KW - Pressure

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U2 - 10.1016/j.physb.2005.01.032

DO - 10.1016/j.physb.2005.01.032

M3 - Article

AN - SCOPUS:18144430917

SN - 0921-4526

VL - 359-361

SP - 190

EP - 192

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - SPEC. ISS.

ER -

Infrared study on CeSb under high pressures

Abstract

Bibliographical note

Keywords

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