Journal article
Method for measuring the momentum-dependent gap magnitude and relative phase in La 1.85Sr .15CuO 4
The Journal of physics and chemistry of solids, Vol.54(10), pp.1465-1468
1993
DOI: 10.1016/0022-3697(93)90209-A
Abstract
The magnitude and phase variation of the superconducting gap over the (normal) Fermi surface of high-temperature superconductors remains a significant unresolved question. Does the gap have nodes? Is the phase of the gap constant, does it change sign, or is it perhaps complex? A detailed answer to this question would provide important constraints on various pairing mechanisms. Here we describe a direct, angle-resolved method of measuring the gap magnitude
and phase on the Fermi surface which probes the bulk superconductor. The required experiments involve measuring phonon linewidths in the normal and superconducting state, with resolution available in current facilities. We address the L
1.85Sr
.15CuO
4 material now, but the method is applicable to all high-T
c
superconductors with quasi-two-dimensional Fermi surfaces.
Details
- Title: Subtitle
- Method for measuring the momentum-dependent gap magnitude and relative phase in La 1.85Sr .15CuO 4
- Creators
- Michael E. Flatté - University of California, Santa BarbaraS. Quinlan - University of California, Santa BarbaraD.J. Scalapino - University of California, Santa Barbara
- Resource Type
- Journal article
- Publication Details
- The Journal of physics and chemistry of solids, Vol.54(10), pp.1465-1468
- Publisher
- Elsevier Ltd
- DOI
- 10.1016/0022-3697(93)90209-A
- ISSN
- 0022-3697
- eISSN
- 1879-2553
- Language
- English
- Date published
- 1993
- Academic Unit
- Electrical and Computer Engineering; Physics and Astronomy
- Record Identifier
- 9984429034102771
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