A Raman scattering study of superconductivity in MgB2

James W. Quilty, Sergey Lee, Ayako Yamamoto, Setsuko Tajima, Akio Yamanaka

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Measurements of the in-plane and out-of-plane electronic Raman continuum in MgB2 single crystals show markedly different behaviour below Tc, indicative of a complex gap structure. In xx and xy polarisation configurations, a sharp pair-breaking peak is seen near 100 cm-1 but no scattering threshold forms directly below the peak. In zz and zx polarisations, a threshold is seen at 30 cm-1 but no pair-breaking peak appears. This behaviour can be understood in terms of band-dependent impurity scattering effects on two separate gaps.

Original languageEnglish
Pages (from-to)131-132
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Volume388-389
DOIs
Publication statusPublished - 2003 May
Externally publishedYes

Fingerprint

Superconductivity
Raman scattering
superconductivity
Scattering
Polarization
Raman spectra
thresholds
Single crystals
polarization
Impurities
scattering
continuums
impurities
single crystals
configurations
electronics

Keywords

  • MgB
  • Raman spectroscopy
  • Superconducting gap

ASJC Scopus subject areas

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

Cite this

A Raman scattering study of superconductivity in MgB2 . / Quilty, James W.; Lee, Sergey; Yamamoto, Ayako; Tajima, Setsuko; Yamanaka, Akio.

In: Physica C: Superconductivity and its Applications, Vol. 388-389, 05.2003, p. 131-132.

Research output: Contribution to journalArticle

Quilty, James W. ; Lee, Sergey ; Yamamoto, Ayako ; Tajima, Setsuko ; Yamanaka, Akio. / A Raman scattering study of superconductivity in MgB2 In: Physica C: Superconductivity and its Applications. 2003 ; Vol. 388-389. pp. 131-132.
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