Optical Properties of c-Axis Oriented Superconducting MgB2Films

J. J. Tu; G. L. Carr; V. Perebeinos; C. C. Homes; M. Strongin; P. B. Allen; W. N. Kang; Eun Mi Choi; Hyeong Jin Kim; Sung Ik Lee

doi:10.1103/PhysRevLett.87.277001

Optical Properties of c-Axis Oriented Superconducting MgB₂Films

J. J. Tu
, G. L. Carr
, V. Perebeinos
, C. C. Homes
, M. Strongin
, P. B. Allen
, W. N. Kang
, Eun Mi Choi
, Hyeong Jin Kim
, Sung Ik Lee

Department of Electrical Engineering

Brookhaven National Laboratory
Stony Brook University
Pohang University of Science and Technology

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

2 Scopus citations

Abstract

Temperature dependent optical conductivities and dc resistivity of c-axis oriented superconducting (T_c= 39.6K) MgB₂films (∼450 nm) have been measured. The normal state ab-plane optical conductivities can be described by the Drude model with a temperature independent Drude plasma frequency of ω_{p, D}= 13600 ± 100cm^-1or 1.68 ±0.01 eV. The normal state resistivity is fitted by the Bloch-Grüneisen formula with an electron-phonon coupling constant λ_tr= 0.13 ± 0.02. The optical conductivity spectra below T_cof these films suggest that MgB₂is a multigap superconductor.

Original language	English
Pages (from-to)	277001-277001-4
Journal	Physical Review Letters
Volume	87
Issue number	27
DOIs	https://doi.org/10.1103/PhysRevLett.87.277001
State	Published - Dec 31 2001

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title = "Optical Properties of c-Axis Oriented Superconducting MgB2Films",

abstract = "Temperature dependent optical conductivities and dc resistivity of c-axis oriented superconducting (Tc= 39.6K) MgB2films (∼450 nm) have been measured. The normal state ab-plane optical conductivities can be described by the Drude model with a temperature independent Drude plasma frequency of ωp, D= 13600 ± 100cm-1or 1.68 ±0.01 eV. The normal state resistivity is fitted by the Bloch-Gr{\"u}neisen formula with an electron-phonon coupling constant λtr= 0.13 ± 0.02. The optical conductivity spectra below Tcof these films suggest that MgB2is a multigap superconductor.",

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doi = "10.1103/PhysRevLett.87.277001",

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TY - JOUR

T1 - Optical Properties of c-Axis Oriented Superconducting MgB2Films

AU - Tu, J. J.

AU - Carr, G. L.

AU - Perebeinos, V.

AU - Homes, C. C.

AU - Strongin, M.

AU - Allen, P. B.

AU - Kang, W. N.

AU - Choi, Eun Mi

AU - Kim, Hyeong Jin

AU - Lee, Sung Ik

PY - 2001/12/31

Y1 - 2001/12/31

N2 - Temperature dependent optical conductivities and dc resistivity of c-axis oriented superconducting (Tc= 39.6K) MgB2films (∼450 nm) have been measured. The normal state ab-plane optical conductivities can be described by the Drude model with a temperature independent Drude plasma frequency of ωp, D= 13600 ± 100cm-1or 1.68 ±0.01 eV. The normal state resistivity is fitted by the Bloch-Grüneisen formula with an electron-phonon coupling constant λtr= 0.13 ± 0.02. The optical conductivity spectra below Tcof these films suggest that MgB2is a multigap superconductor.

AB - Temperature dependent optical conductivities and dc resistivity of c-axis oriented superconducting (Tc= 39.6K) MgB2films (∼450 nm) have been measured. The normal state ab-plane optical conductivities can be described by the Drude model with a temperature independent Drude plasma frequency of ωp, D= 13600 ± 100cm-1or 1.68 ±0.01 eV. The normal state resistivity is fitted by the Bloch-Grüneisen formula with an electron-phonon coupling constant λtr= 0.13 ± 0.02. The optical conductivity spectra below Tcof these films suggest that MgB2is a multigap superconductor.

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U2 - 10.1103/PhysRevLett.87.277001

DO - 10.1103/PhysRevLett.87.277001

M3 - Article

AN - SCOPUS:85037256376

SN - 0031-9007

VL - 87

SP - 277001-277001-4

JO - Physical Review Letters

JF - Physical Review Letters

IS - 27

ER -

Optical Properties of c-Axis Oriented Superconducting MgB₂Films

Abstract

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