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 language | English |
|---|---|
| Pages (from-to) | 131-132 |
| Number of pages | 2 |
| Journal | Physica C: Superconductivity and its applications |
| Volume | 388-389 |
| DOIs | |
| Publication status | Published - 2003 May 1 |
| Event | proceedings of the 23rd international conference on low temper - Hiroshima, Japan Duration: 2002 Aug 20 → 2002 Aug 27 |
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
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Quilty, J. W., Lee, S., Yamamoto, A., Tajima, S., & Yamanaka, A. (2003). A Raman scattering study of superconductivity in MgB2. Physica C: Superconductivity and its applications, 388-389, 131-132. https://doi.org/10.1016/S0921-4534(02)02680-1