Reflectivity of Ba2YCu3O7-σ: Normal state dynamics

J. Orenstein; G. A. Thomas; D. H. Rapkine; A. J. Millis; L. F. Schneemeyer; J. V. Waszczak

doi:10.1016/0921-4534(88)90464-9

Reflectivity of Ba₂YCu₃O_7-σ: Normal state dynamics

J. Orenstein, G. A. Thomas, D. H. Rapkine, A. J. Millis, L. F. Schneemeyer, J. V. Waszczak

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Abstract

Measurements of reflectivity, R, as a function of temperature, T, and frequency, ω, in crystals of Ba₂YCu₃O_7-δ, with σ ≅ 0.1, 0.3, and 0.8, are reported. The frequency dependent conductivity, σ(ω, T), obtained by analysis of R extrapolates at low ω to values consistent with previously reported σ(O,T). To explain the shape of σ(ω, T) requires the quasiparticle mass and lifetime to be strongly ω-dependent, withh¯/τ ≈ 2k_BT and m^*/m_o ≈ 7 at low ω, crossingg over toh¯/τ ≈ 0.35 eV and m^*/m_o ≈ 1 forh¯/τ 〉 0.3 eV.

Original language	English (US)
Pages (from-to)	1740-1743
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	153-155
DOIs	https://doi.org/10.1016/0921-4534(88)90464-9
State	Published - 1988
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/0921-4534(88)90464-9

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title = "Reflectivity of Ba2YCu3O7-σ: Normal state dynamics",

abstract = "Measurements of reflectivity, R, as a function of temperature, T, and frequency, ω, in crystals of Ba2YCu3O7-δ, with σ ≅ 0.1, 0.3, and 0.8, are reported. The frequency dependent conductivity, σ(ω, T), obtained by analysis of R extrapolates at low ω to values consistent with previously reported σ(O,T). To explain the shape of σ(ω, T) requires the quasiparticle mass and lifetime to be strongly ω-dependent, withh¯/τ ≈ 2kBT and m*/mo ≈ 7 at low ω, crossingg over toh¯/τ ≈ 0.35 eV and m*/mo ≈ 1 forh¯/τ 〉 0.3 eV.",

author = "J. Orenstein and Thomas, {G. A.} and Rapkine, {D. H.} and Millis, {A. J.} and Schneemeyer, {L. F.} and Waszczak, {J. V.}",

year = "1988",

doi = "10.1016/0921-4534(88)90464-9",

language = "English (US)",

volume = "153-155",

pages = "1740--1743",

journal = "Physica C: Superconductivity and its applications",

issn = "0921-4534",

publisher = "Elsevier",

}

TY - JOUR

T1 - Reflectivity of Ba2YCu3O7-σ

T2 - Normal state dynamics

AU - Orenstein, J.

AU - Thomas, G. A.

AU - Rapkine, D. H.

AU - Millis, A. J.

AU - Schneemeyer, L. F.

AU - Waszczak, J. V.

PY - 1988

Y1 - 1988

N2 - Measurements of reflectivity, R, as a function of temperature, T, and frequency, ω, in crystals of Ba2YCu3O7-δ, with σ ≅ 0.1, 0.3, and 0.8, are reported. The frequency dependent conductivity, σ(ω, T), obtained by analysis of R extrapolates at low ω to values consistent with previously reported σ(O,T). To explain the shape of σ(ω, T) requires the quasiparticle mass and lifetime to be strongly ω-dependent, withh¯/τ ≈ 2kBT and m*/mo ≈ 7 at low ω, crossingg over toh¯/τ ≈ 0.35 eV and m*/mo ≈ 1 forh¯/τ 〉 0.3 eV.

AB - Measurements of reflectivity, R, as a function of temperature, T, and frequency, ω, in crystals of Ba2YCu3O7-δ, with σ ≅ 0.1, 0.3, and 0.8, are reported. The frequency dependent conductivity, σ(ω, T), obtained by analysis of R extrapolates at low ω to values consistent with previously reported σ(O,T). To explain the shape of σ(ω, T) requires the quasiparticle mass and lifetime to be strongly ω-dependent, withh¯/τ ≈ 2kBT and m*/mo ≈ 7 at low ω, crossingg over toh¯/τ ≈ 0.35 eV and m*/mo ≈ 1 forh¯/τ 〉 0.3 eV.

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U2 - 10.1016/0921-4534(88)90464-9

DO - 10.1016/0921-4534(88)90464-9

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AN - SCOPUS:0024019404

SN - 0921-4534

VL - 153-155

SP - 1740

EP - 1743

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

ER -

Reflectivity of Ba₂YCu₃O_7-σ: Normal state dynamics

Abstract

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