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27 April 2024 |
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Article overview
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New features in the microwave response of YBCO crystals: Evidence for a multi-component order parameter | H. Srikanth
; Balam A. Willemsen
; T. Jacobs
; S. Sridhar
; A. Erb
; E. Walker
; R. Flukiger
; | Date: |
5 Oct 1996 | Subject: | Superconductivity | cond-mat.supr-con | Affiliation: | Northeastern University), A. Erb, E. Walker and R. Flukiger (University of Geneva | Abstract: | New features are reported in precision measurements of the complex microwave conductivity of high quality $YBa_{2}Cu_{3}O_{6.95}$ crystals grown in $BaZrO_{3}$ crucibles. A third peak in the normal conductivity, $sigma_{1}(T)$, at around $80K$, and enhanced pair conductivity $sigma_{2}(T)$ below $sim 65K$ are observed. The data are inconsistent with a single order parameter, and instead are indicative of multi-component superconductivity. Overall, these results point to the presence of multiple pairing interactions in $YBa_{2}Cu_{3}O_{6.95}$ and also provide a natural explanation to account for the low temperature $35K$ conductivity peak observed in all $YBa_{2}Cu_{3}O_{6.95}$ crystals. | Source: | arXiv, cond-mat/9610032 | Services: | Forum | Review | PDF | Favorites |
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