Normal-state properties of ABa2Cu3O7-y compounds (A=Y and Gd): Electron-electron correlations

S. W. Cheong; S. E. Brown; Z. Fisk; R. S. Kwok; J. D. Thompson; E. Zirngiebl; G. Gruner; D. E. Peterson; G. L. Wells; R. B. Schwarz; J. R. Cooper

doi:10.1103/PhysRevB.36.3913

Normal-state properties of ABa2Cu3O7-y compounds (A=Y and Gd): Electron-electron correlations

S. W. Cheong, S. E. Brown, Z. Fisk, R. S. Kwok, J. D. Thompson, E. Zirngiebl, G. Gruner, D. E. Peterson, G. L. Wells, R. B. Schwarz, J. R. Cooper

School of Arts and Sciences, Physics & Astronomy

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

92 Scopus citations

Abstract

Resistivity, thermoelectric power, Hall effect, and magnetic susceptibility measurements are reported in the normal state of the high-Tc compounds YBa2Cu3O7-y and GdBa2Cu3O7-y. The results are different from those expected for an uncorrelated metallic band. We suggest that Coulomb interactions are important and that the interaction energy is comparable to or larger than the uncorrelated bandwidth, leading to moderately heavy-fermion-like behavior in the normal state. The Sommerfeld coefficient calculated from the susceptibility indicates that the electron-phonon coupling constant at Tc is not unusually large.

Original language	English (US)
Pages (from-to)	3913-3916
Number of pages	4
Journal	Physical Review B
Volume	36
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevB.36.3913
State	Published - 1987

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1103/PhysRevB.36.3913

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title = "Normal-state properties of ABa2Cu3O7-y compounds (A=Y and Gd): Electron-electron correlations",

abstract = "Resistivity, thermoelectric power, Hall effect, and magnetic susceptibility measurements are reported in the normal state of the high-Tc compounds YBa2Cu3O7-y and GdBa2Cu3O7-y. The results are different from those expected for an uncorrelated metallic band. We suggest that Coulomb interactions are important and that the interaction energy is comparable to or larger than the uncorrelated bandwidth, leading to moderately heavy-fermion-like behavior in the normal state. The Sommerfeld coefficient calculated from the susceptibility indicates that the electron-phonon coupling constant at Tc is not unusually large.",

author = "Cheong, {S. W.} and Brown, {S. E.} and Z. Fisk and Kwok, {R. S.} and Thompson, {J. D.} and E. Zirngiebl and G. Gruner and Peterson, {D. E.} and Wells, {G. L.} and Schwarz, {R. B.} and Cooper, {J. R.}",

year = "1987",

doi = "10.1103/PhysRevB.36.3913",

language = "English (US)",

volume = "36",

pages = "3913--3916",

journal = "Physical Review B-Condensed Matter",

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publisher = "American Institute of Physics",

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TY - JOUR

T1 - Normal-state properties of ABa2Cu3O7-y compounds (A=Y and Gd)

T2 - Electron-electron correlations

AU - Cheong, S. W.

AU - Brown, S. E.

AU - Fisk, Z.

AU - Kwok, R. S.

AU - Thompson, J. D.

AU - Zirngiebl, E.

AU - Gruner, G.

AU - Peterson, D. E.

AU - Wells, G. L.

AU - Schwarz, R. B.

AU - Cooper, J. R.

PY - 1987

Y1 - 1987

N2 - Resistivity, thermoelectric power, Hall effect, and magnetic susceptibility measurements are reported in the normal state of the high-Tc compounds YBa2Cu3O7-y and GdBa2Cu3O7-y. The results are different from those expected for an uncorrelated metallic band. We suggest that Coulomb interactions are important and that the interaction energy is comparable to or larger than the uncorrelated bandwidth, leading to moderately heavy-fermion-like behavior in the normal state. The Sommerfeld coefficient calculated from the susceptibility indicates that the electron-phonon coupling constant at Tc is not unusually large.

AB - Resistivity, thermoelectric power, Hall effect, and magnetic susceptibility measurements are reported in the normal state of the high-Tc compounds YBa2Cu3O7-y and GdBa2Cu3O7-y. The results are different from those expected for an uncorrelated metallic band. We suggest that Coulomb interactions are important and that the interaction energy is comparable to or larger than the uncorrelated bandwidth, leading to moderately heavy-fermion-like behavior in the normal state. The Sommerfeld coefficient calculated from the susceptibility indicates that the electron-phonon coupling constant at Tc is not unusually large.

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JF - Physical Review B-Condensed Matter

IS - 7

ER -

Normal-state properties of ABa2Cu3O7-y compounds (A=Y and Gd): Electron-electron correlations

Abstract

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