Spectral evolution in (Ca, Sr)RuO3 near the mott-hubbard transition

J. S. Ahn; J. Bak; H. S. Choi; T. W. Noh; J. E. Han; Yunkyu Bang; J. H. Cho; Q. X. Jia

doi:10.1103/PhysRevLett.82.5321

Spectral evolution in (Ca, Sr)RuO₃ near the mott-hubbard transition

J. S. Ahn
, J. Bak
, H. S. Choi
, T. W. Noh
, J. E. Han
, Yunkyu Bang
, J. H. Cho
, Q. X. Jia

University at Buffalo

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

75 Scopus citations

Abstract

We investigated optical properties of (Ca, Sr)RuO₃ films on the borderline of a metal-insulator transition. Our results show all of the predicted characteristics for a metallic Mott-Hubbard system, including (i) a mass enhancement in dc limit, (ii) a U/2 excitation, and (iii) a U excitation. Also, self-consistency is exploited within the Gutzwiller-Brinkman-Rice picture for the Mott transition. Our finding displays that electron correlation should be important even in 4d materials. However, low frequency behaviors of electrodynamic quantities suggest extra scattering mechanisms in addition to the Mott-Hubbard correlation.

Original language	English
Pages (from-to)	5321-5324
Number of pages	4
Journal	Physical Review Letters
Volume	82
Issue number	26
DOIs	https://doi.org/10.1103/PhysRevLett.82.5321
State	Published - 1999

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title = "Spectral evolution in (Ca, Sr)RuO3 near the mott-hubbard transition",

abstract = "We investigated optical properties of (Ca, Sr)RuO3 films on the borderline of a metal-insulator transition. Our results show all of the predicted characteristics for a metallic Mott-Hubbard system, including (i) a mass enhancement in dc limit, (ii) a U/2 excitation, and (iii) a U excitation. Also, self-consistency is exploited within the Gutzwiller-Brinkman-Rice picture for the Mott transition. Our finding displays that electron correlation should be important even in 4d materials. However, low frequency behaviors of electrodynamic quantities suggest extra scattering mechanisms in addition to the Mott-Hubbard correlation.",

author = "Ahn, \{J. S.\} and J. Bak and Choi, \{H. S.\} and Noh, \{T. W.\} and Han, \{J. E.\} and Yunkyu Bang and Cho, \{J. H.\} and Jia, \{Q. X.\}",

year = "1999",

doi = "10.1103/PhysRevLett.82.5321",

language = "English",

volume = "82",

pages = "5321--5324",

journal = "Physical Review Letters",

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T1 - Spectral evolution in (Ca, Sr)RuO3 near the mott-hubbard transition

AU - Ahn, J. S.

AU - Bak, J.

AU - Choi, H. S.

AU - Noh, T. W.

AU - Han, J. E.

AU - Bang, Yunkyu

AU - Cho, J. H.

AU - Jia, Q. X.

PY - 1999

Y1 - 1999

N2 - We investigated optical properties of (Ca, Sr)RuO3 films on the borderline of a metal-insulator transition. Our results show all of the predicted characteristics for a metallic Mott-Hubbard system, including (i) a mass enhancement in dc limit, (ii) a U/2 excitation, and (iii) a U excitation. Also, self-consistency is exploited within the Gutzwiller-Brinkman-Rice picture for the Mott transition. Our finding displays that electron correlation should be important even in 4d materials. However, low frequency behaviors of electrodynamic quantities suggest extra scattering mechanisms in addition to the Mott-Hubbard correlation.

AB - We investigated optical properties of (Ca, Sr)RuO3 films on the borderline of a metal-insulator transition. Our results show all of the predicted characteristics for a metallic Mott-Hubbard system, including (i) a mass enhancement in dc limit, (ii) a U/2 excitation, and (iii) a U excitation. Also, self-consistency is exploited within the Gutzwiller-Brinkman-Rice picture for the Mott transition. Our finding displays that electron correlation should be important even in 4d materials. However, low frequency behaviors of electrodynamic quantities suggest extra scattering mechanisms in addition to the Mott-Hubbard correlation.

UR - https://www.scopus.com/pages/publications/4243683916

U2 - 10.1103/PhysRevLett.82.5321

DO - 10.1103/PhysRevLett.82.5321

M3 - Article

SN - 0031-9007

VL - 82

SP - 5321

EP - 5324

JO - Physical Review Letters

JF - Physical Review Letters

IS - 26

ER -

Spectral evolution in (Ca, Sr)RuO₃ near the mott-hubbard transition

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