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 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - A Raman scattering study of superconductivity in MgB2
AU - Quilty, James W.
AU - Lee, Sergey
AU - Yamamoto, Ayako
AU - Tajima, Setsuko
AU - Yamanaka, Akio
PY - 2003/5
Y1 - 2003/5
N2 - 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.
AB - 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.
KW - MgB
KW - Raman spectroscopy
KW - Superconducting gap
UR - http://www.scopus.com/inward/record.url?scp=0038188608&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0038188608&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(02)02680-1
DO - 10.1016/S0921-4534(02)02680-1
M3 - Article
VL - 388-389
SP - 131
EP - 132
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
ER -