Mid-infrared reflectivity and ellipsometry measurements on single-crystal YBa2Cu3O7 and Bi2Sr2CuO6+y

Yukio Watanabe; Z. Z. Wang; S. A. Lyon; D. C. Tsui; N. P. Ong; J. M. Tarascon; P. Barboux

doi:10.1103/PhysRevB.40.6884

Mid-infrared reflectivity and ellipsometry measurements on single-crystal YBa2Cu3O7 and Bi2Sr2CuO6+y

Yukio Watanabe, Z. Z. Wang, S. A. Lyon, D. C. Tsui, N. P. Ong, J. M. Tarascon, P. Barboux

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Abstract

We have measured the room-temperature reflectivity of 90-K single crystals YBa2Cu3O7 in the frequency range 6009000 cm-1. The reflectivity R in these highly conducting samples (ab=150 cm at 290 K) is found to be higher than in previous reports. We fit R to a simple Drude-Lorentz model and compare the fit parameters with the dc transport values. (The effective-mass ratio of the carriers is found to be 2.0, and the scattering rate Latin small letter h with stroke/ is 3.1kBT at room temperature.) Ellipsometry measurements have also been performed using transverse-electric and transverse-magnetic polarizations. The dielectric dispersion derived from ellipsometry shows some important deviations from the Drude-Lorentz model. Reflectivity data from nonsuperconducting crystals of Bi2Sr2CuO6+y are also reported.

Original language	English (US)
Pages (from-to)	6884-6889
Number of pages	6
Journal	Physical Review B
Volume	40
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.40.6884
State	Published - 1989

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1103/PhysRevB.40.6884

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@article{9576fdee9dbb4e67b070ff400a5b35ad,

title = "Mid-infrared reflectivity and ellipsometry measurements on single-crystal YBa2Cu3O7 and Bi2Sr2CuO6+y",

abstract = "We have measured the room-temperature reflectivity of 90-K single crystals YBa2Cu3O7 in the frequency range 6009000 cm-1. The reflectivity R in these highly conducting samples (ab=150 cm at 290 K) is found to be higher than in previous reports. We fit R to a simple Drude-Lorentz model and compare the fit parameters with the dc transport values. (The effective-mass ratio of the carriers is found to be 2.0, and the scattering rate Latin small letter h with stroke/ is 3.1kBT at room temperature.) Ellipsometry measurements have also been performed using transverse-electric and transverse-magnetic polarizations. The dielectric dispersion derived from ellipsometry shows some important deviations from the Drude-Lorentz model. Reflectivity data from nonsuperconducting crystals of Bi2Sr2CuO6+y are also reported.",

author = "Yukio Watanabe and Wang, \{Z. Z.\} and Lyon, \{S. A.\} and Tsui, \{D. C.\} and Ong, \{N. P.\} and Tarascon, \{J. M.\} and P. Barboux",

year = "1989",

doi = "10.1103/PhysRevB.40.6884",

language = "English (US)",

volume = "40",

pages = "6884--6889",

journal = "Physical Review B",

issn = "0163-1829",

publisher = "American Physical Society",

number = "10",

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TY - JOUR

T1 - Mid-infrared reflectivity and ellipsometry measurements on single-crystal YBa2Cu3O7 and Bi2Sr2CuO6+y

AU - Watanabe, Yukio

AU - Wang, Z. Z.

AU - Lyon, S. A.

AU - Tsui, D. C.

AU - Ong, N. P.

AU - Tarascon, J. M.

AU - Barboux, P.

PY - 1989

Y1 - 1989

N2 - We have measured the room-temperature reflectivity of 90-K single crystals YBa2Cu3O7 in the frequency range 6009000 cm-1. The reflectivity R in these highly conducting samples (ab=150 cm at 290 K) is found to be higher than in previous reports. We fit R to a simple Drude-Lorentz model and compare the fit parameters with the dc transport values. (The effective-mass ratio of the carriers is found to be 2.0, and the scattering rate Latin small letter h with stroke/ is 3.1kBT at room temperature.) Ellipsometry measurements have also been performed using transverse-electric and transverse-magnetic polarizations. The dielectric dispersion derived from ellipsometry shows some important deviations from the Drude-Lorentz model. Reflectivity data from nonsuperconducting crystals of Bi2Sr2CuO6+y are also reported.

AB - We have measured the room-temperature reflectivity of 90-K single crystals YBa2Cu3O7 in the frequency range 6009000 cm-1. The reflectivity R in these highly conducting samples (ab=150 cm at 290 K) is found to be higher than in previous reports. We fit R to a simple Drude-Lorentz model and compare the fit parameters with the dc transport values. (The effective-mass ratio of the carriers is found to be 2.0, and the scattering rate Latin small letter h with stroke/ is 3.1kBT at room temperature.) Ellipsometry measurements have also been performed using transverse-electric and transverse-magnetic polarizations. The dielectric dispersion derived from ellipsometry shows some important deviations from the Drude-Lorentz model. Reflectivity data from nonsuperconducting crystals of Bi2Sr2CuO6+y are also reported.

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U2 - 10.1103/PhysRevB.40.6884

DO - 10.1103/PhysRevB.40.6884

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AN - SCOPUS:33750943138

SN - 0163-1829

VL - 40

SP - 6884

EP - 6889

JO - Physical Review B

JF - Physical Review B

IS - 10

ER -

Mid-infrared reflectivity and ellipsometry measurements on single-crystal YBa2Cu3O7 and Bi2Sr2CuO6+y

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All Science Journal Classification (ASJC) codes

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