Low-lying electronic structure of triangular cobaltite

A. P. Kuprin; M. Z. Hasan; Y. D. Chuang; D. Qian; M. Foo; R. J. Cava

doi:10.1016/j.jpcs.2005.10.158

Low-lying electronic structure of triangular cobaltite

A. P. Kuprin, M. Z. Hasan, Y. D. Chuang, D. Qian, M. Foo, R. J. Cava

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

4 Scopus citations

Abstract

We report detailed Fermi surface topology and quasiparticle dynamics of the host cobaltate Na_0.7CoO₂. A direct mapping of the Fermi surface is carried out by angle-resolved photoemission spectroscopy (ARPES). Fermi surface at 16 K is a hole-pocket centered around the Γ-point. A highly correlated nature of the electron liquid in this system is evidenced from strong on-site Coulomb interaction seen through a valence satellite and via renormalization of the quasiparticle dispersion. The quasiparticle band disperses less than 100 meV and exists in the T-linear regime of resistivity up to 120 K.

Original language	English (US)
Pages (from-to)	235-238
Number of pages	4
Journal	Journal of Physics and Chemistry of Solids
Volume	67
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jpcs.2005.10.158
State	Published - Jan 2006

All Science Journal Classification (ASJC) codes

General Chemistry
General Materials Science
Condensed Matter Physics

Keywords

A. Oxides
A. Superconductors
C. Photoelectron spectroscopy
D. Electronic structure
D. Fermi surface

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10.1016/j.jpcs.2005.10.158

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title = "Low-lying electronic structure of triangular cobaltite",

abstract = "We report detailed Fermi surface topology and quasiparticle dynamics of the host cobaltate Na0.7CoO2. A direct mapping of the Fermi surface is carried out by angle-resolved photoemission spectroscopy (ARPES). Fermi surface at 16 K is a hole-pocket centered around the Γ-point. A highly correlated nature of the electron liquid in this system is evidenced from strong on-site Coulomb interaction seen through a valence satellite and via renormalization of the quasiparticle dispersion. The quasiparticle band disperses less than 100 meV and exists in the T-linear regime of resistivity up to 120 K.",

keywords = "A. Oxides, A. Superconductors, C. Photoelectron spectroscopy, D. Electronic structure, D. Fermi surface",

author = "Kuprin, {A. P.} and Hasan, {M. Z.} and Chuang, {Y. D.} and D. Qian and M. Foo and Cava, {R. J.}",

note = "Funding Information: We would like to thank A. Fedorov, E. Rotenberg, R. Kimmerling, K. Rossnagel, H. Koh, J. Denlinger, and B. Mesler for technical support, A.K. acknowledges financial support from ALS, and M.Z.H. partial support through the NSF-MRSEC (DMR-0213706) grant and characterization supported by DOE grant DE-FG02-05ER46200. Materials synthesis supported by DMR-0213706 and the DOE, Grant, DE-FG02-98-ER45706.",

year = "2006",

month = jan,

doi = "10.1016/j.jpcs.2005.10.158",

language = "English (US)",

volume = "67",

pages = "235--238",

journal = "Journal of Physics and Chemistry of Solids",

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publisher = "Elsevier Limited",

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T1 - Low-lying electronic structure of triangular cobaltite

AU - Kuprin, A. P.

AU - Hasan, M. Z.

AU - Chuang, Y. D.

AU - Qian, D.

AU - Foo, M.

AU - Cava, R. J.

N1 - Funding Information: We would like to thank A. Fedorov, E. Rotenberg, R. Kimmerling, K. Rossnagel, H. Koh, J. Denlinger, and B. Mesler for technical support, A.K. acknowledges financial support from ALS, and M.Z.H. partial support through the NSF-MRSEC (DMR-0213706) grant and characterization supported by DOE grant DE-FG02-05ER46200. Materials synthesis supported by DMR-0213706 and the DOE, Grant, DE-FG02-98-ER45706.

PY - 2006/1

Y1 - 2006/1

N2 - We report detailed Fermi surface topology and quasiparticle dynamics of the host cobaltate Na0.7CoO2. A direct mapping of the Fermi surface is carried out by angle-resolved photoemission spectroscopy (ARPES). Fermi surface at 16 K is a hole-pocket centered around the Γ-point. A highly correlated nature of the electron liquid in this system is evidenced from strong on-site Coulomb interaction seen through a valence satellite and via renormalization of the quasiparticle dispersion. The quasiparticle band disperses less than 100 meV and exists in the T-linear regime of resistivity up to 120 K.

AB - We report detailed Fermi surface topology and quasiparticle dynamics of the host cobaltate Na0.7CoO2. A direct mapping of the Fermi surface is carried out by angle-resolved photoemission spectroscopy (ARPES). Fermi surface at 16 K is a hole-pocket centered around the Γ-point. A highly correlated nature of the electron liquid in this system is evidenced from strong on-site Coulomb interaction seen through a valence satellite and via renormalization of the quasiparticle dispersion. The quasiparticle band disperses less than 100 meV and exists in the T-linear regime of resistivity up to 120 K.

KW - A. Oxides

KW - A. Superconductors

KW - C. Photoelectron spectroscopy

KW - D. Electronic structure

KW - D. Fermi surface

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DO - 10.1016/j.jpcs.2005.10.158

M3 - Article

AN - SCOPUS:33645024266

SN - 0022-3697

VL - 67

SP - 235

EP - 238

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

IS - 1-3

ER -

Low-lying electronic structure of triangular cobaltite

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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