摘要
It is known that for a superconductor of a nodal gap, the in-plane microwave conductivity saturates at low temperatures to a universal value independent of the impurity concentration. We demonstrate that a similar feature can be accessed using channel-dependent Raman scattering. For a (Formula presented)-wave superconductor, the slope of low-temperature Raman intensity at zero frequency is found to be universal in the (Formula presented) and (Formula presented) channels, but not in the (Formula presented) channel. Moreover, universal Raman slopes are sensitive not only to the existence of a node, but also to different pairing states and should allow one to distinguish between such pairing states.
原文 | 英語 |
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頁(從 - 到) | R5614-R5617 |
期刊 | Physical Review B - Condensed Matter and Materials Physics |
卷 | 57 |
發行號 | 10 |
DOIs | |
出版狀態 | 已發佈 - 1998 |
對外發佈 | 是 |
ASJC Scopus subject areas
- 電子、光磁材料
- 凝聚態物理學