Pseudogap formation in 4d transition metal oxide BaRuO3

Y. S. Lee; J. S. Lee; K. W. Kim; T. W. Noh; Jaejun Yu; E. J. Choi; G. Cao; J. E. Chow

doi:10.1209/epl/i2001-00410-4

Pseudogap formation in 4d transition metal oxide BaRuO₃

Y. S. Lee, J. S. Lee, K. W. Kim, T. W. Noh, Jaejun Yu, E. J. Choi, G. Cao, J. E. Chow

Department of Physics

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

52 Scopus citations

Abstract

Optical spectra of nine-layer BaRuO₃ show clear electrodynamic response changes due to a pseudogap formation. As temperature decreases, the pseudogap formation induces a gradual reduction of carrier density n and an abrupt, suppression of scattering rate 1/τ. It was found that the competition between n and 1/τ can induce a crossover from metallic to insulator-like regions. A clear development of the pseudogap as well as the coherent component in BaRuO₃ is evidently distinguished from other pseudogap phenomena observed in high T_c cuprates and heavy-electron systems.

Original language	English
Pages (from-to)	280-286
Number of pages	7
Journal	Europhysics Letters
Volume	55
Issue number	2
DOIs	https://doi.org/10.1209/epl/i2001-00410-4
State	Published - 11 Jul 2001

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title = "Pseudogap formation in 4d transition metal oxide BaRuO3",

abstract = "Optical spectra of nine-layer BaRuO3 show clear electrodynamic response changes due to a pseudogap formation. As temperature decreases, the pseudogap formation induces a gradual reduction of carrier density n and an abrupt, suppression of scattering rate 1/τ. It was found that the competition between n and 1/τ can induce a crossover from metallic to insulator-like regions. A clear development of the pseudogap as well as the coherent component in BaRuO3 is evidently distinguished from other pseudogap phenomena observed in high Tc cuprates and heavy-electron systems.",

author = "Lee, \{Y. S.\} and Lee, \{J. S.\} and Kim, \{K. W.\} and Noh, \{T. W.\} and Jaejun Yu and Choi, \{E. J.\} and G. Cao and Chow, \{J. E.\}",

year = "2001",

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doi = "10.1209/epl/i2001-00410-4",

language = "English",

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T1 - Pseudogap formation in 4d transition metal oxide BaRuO3

AU - Lee, Y. S.

AU - Lee, J. S.

AU - Kim, K. W.

AU - Noh, T. W.

AU - Yu, Jaejun

AU - Choi, E. J.

AU - Cao, G.

AU - Chow, J. E.

PY - 2001/7/11

Y1 - 2001/7/11

N2 - Optical spectra of nine-layer BaRuO3 show clear electrodynamic response changes due to a pseudogap formation. As temperature decreases, the pseudogap formation induces a gradual reduction of carrier density n and an abrupt, suppression of scattering rate 1/τ. It was found that the competition between n and 1/τ can induce a crossover from metallic to insulator-like regions. A clear development of the pseudogap as well as the coherent component in BaRuO3 is evidently distinguished from other pseudogap phenomena observed in high Tc cuprates and heavy-electron systems.

AB - Optical spectra of nine-layer BaRuO3 show clear electrodynamic response changes due to a pseudogap formation. As temperature decreases, the pseudogap formation induces a gradual reduction of carrier density n and an abrupt, suppression of scattering rate 1/τ. It was found that the competition between n and 1/τ can induce a crossover from metallic to insulator-like regions. A clear development of the pseudogap as well as the coherent component in BaRuO3 is evidently distinguished from other pseudogap phenomena observed in high Tc cuprates and heavy-electron systems.

UR - https://www.scopus.com/pages/publications/0035796140

U2 - 10.1209/epl/i2001-00410-4

DO - 10.1209/epl/i2001-00410-4

M3 - Article

AN - SCOPUS:0035796140

SN - 0295-5075

VL - 55

SP - 280

EP - 286

JO - Europhysics Letters

JF - Europhysics Letters

IS - 2

ER -

Pseudogap formation in 4d transition metal oxide BaRuO₃

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