Infrared and optical properties of single-crystal YNi2B2C superconductor

Jae Hoon Kim, Hanhee Paik, Mi Ock Mun, B. K. Cho, S. J. Youn, H. B. Kim, Sung Ik Lee

Research output: Contribution to journalConference article

Abstract

We have determined the optical conductivity and other key spectral functions of single-crystal YNi2B2C for the spectral range of 5 meV - 4.1 eV via infrared reflectivity measurements and spectroscopic ellipsometry. Polished crystals and polished-and-annealed crystals were compared to understand the effect of annealing on the optical response. The conductivity spectrum of YNi2B2C exhibits metallic electronic response with the screened plasma frequency of 3.76 eV. The free-electron response is not well described by the Drude model alone. A number of interband transitions also appear beyond 1 eV. Their energies and JDOS critical-point types are analyzed on the basis of selection rules and results of band-structure calculations.

Original languageEnglish
JournalPhysica C: Superconductivity and its applications
Volume341-348
DOIs
Publication statusPublished - 2000 Nov 1
EventInternational Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors VI - Houston, TX, USA
Duration: 2000 Feb 202000 Feb 25

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Superconducting materials
Optical properties
Single crystals
Infrared radiation
Optical conductivity
optical properties
Crystals
Spectroscopic ellipsometry
single crystals
Band structure
conductivity
plasma frequencies
Annealing
Plasmas
free electrons
ellipsometry
crystals
Electrons
critical point
reflectance

All Science Journal Classification (ASJC) codes

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

Cite this

Kim, Jae Hoon ; Paik, Hanhee ; Mun, Mi Ock ; Cho, B. K. ; Youn, S. J. ; Kim, H. B. ; Lee, Sung Ik. / Infrared and optical properties of single-crystal YNi2B2C superconductor. In: Physica C: Superconductivity and its applications. 2000 ; Vol. 341-348.
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abstract = "We have determined the optical conductivity and other key spectral functions of single-crystal YNi2B2C for the spectral range of 5 meV - 4.1 eV via infrared reflectivity measurements and spectroscopic ellipsometry. Polished crystals and polished-and-annealed crystals were compared to understand the effect of annealing on the optical response. The conductivity spectrum of YNi2B2C exhibits metallic electronic response with the screened plasma frequency of 3.76 eV. The free-electron response is not well described by the Drude model alone. A number of interband transitions also appear beyond 1 eV. Their energies and JDOS critical-point types are analyzed on the basis of selection rules and results of band-structure calculations.",
author = "Kim, {Jae Hoon} and Hanhee Paik and Mun, {Mi Ock} and Cho, {B. K.} and Youn, {S. J.} and Kim, {H. B.} and Lee, {Sung Ik}",
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Infrared and optical properties of single-crystal YNi2B2C superconductor. / Kim, Jae Hoon; Paik, Hanhee; Mun, Mi Ock; Cho, B. K.; Youn, S. J.; Kim, H. B.; Lee, Sung Ik.

In: Physica C: Superconductivity and its applications, Vol. 341-348, 01.11.2000.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Infrared and optical properties of single-crystal YNi2B2C superconductor

AU - Kim, Jae Hoon

AU - Paik, Hanhee

AU - Mun, Mi Ock

AU - Cho, B. K.

AU - Youn, S. J.

AU - Kim, H. B.

AU - Lee, Sung Ik

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AB - We have determined the optical conductivity and other key spectral functions of single-crystal YNi2B2C for the spectral range of 5 meV - 4.1 eV via infrared reflectivity measurements and spectroscopic ellipsometry. Polished crystals and polished-and-annealed crystals were compared to understand the effect of annealing on the optical response. The conductivity spectrum of YNi2B2C exhibits metallic electronic response with the screened plasma frequency of 3.76 eV. The free-electron response is not well described by the Drude model alone. A number of interband transitions also appear beyond 1 eV. Their energies and JDOS critical-point types are analyzed on the basis of selection rules and results of band-structure calculations.

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