dorsal/arxiv
View SchemaMicrowave Surface Impedance of YBCO:123 crystals: Experiment and comparison to a d-wave model
| Authors | T. Jacobs, S. Sridhar, C. T. Rieck, K. Scharnberg, T. Wolf, J. Halbritter |
|---|---|
| Categories | |
| ArXiv ID | supr-con/9504002 |
| URL | https://arxiv.org/abs/supr-con/9504002 |
| DOI | 10.1016/0022-3697(95)00264-2 |
Abstract
We present measurements of the microwave surface resistance Rs and the penetration depth lambda of YBCO:123 crystals. At low T obeys lambda(T) a polynomial behavior, while Rs displays a characteristic non-monotonic T-dependence. A detailed comparison of the experimental data is made to a model of d-wave superconductivity which includes both elastic and inelastic scattering. While the model reproduces the general features of the experimental data, three aspects of the parameters needed are worth noting. The elastic scattering rate required to fit the data is much smaller than measured from the normal state, the scattering phase shifts have to be close to pi/2 and a strong coupling value of the gap parameter 2\Delta(0)/kTc = 6 is needed. On the experimental side the uncertainties regarding the material parameters lambda(0) and Rs,res(0) further complicate a quantitative comparison. For one sample does Rs,res(0) agree with the intrinsic value which results from the d-wave model.
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"abstract": "We present measurements of the microwave surface resistance Rs and the\npenetration depth lambda of YBCO:123 crystals. At low T obeys lambda(T) a\npolynomial behavior, while Rs displays a characteristic non-monotonic\nT-dependence.\n A detailed comparison of the experimental data is made to a model of d-wave\nsuperconductivity which includes both elastic and inelastic scattering. While\nthe model reproduces the general features of the experimental data, three\naspects of the parameters needed are worth noting. The elastic scattering rate\nrequired to fit the data is much smaller than measured from the normal state,\nthe scattering phase shifts have to be close to pi/2 and a strong coupling\nvalue of the gap parameter 2\\Delta(0)/kTc = 6 is needed. On the experimental\nside the uncertainties regarding the material parameters lambda(0) and\nRs,res(0) further complicate a quantitative comparison.\n For one sample does Rs,res(0) agree with the intrinsic value which results\nfrom the d-wave model.",
"arxiv_id": "supr-con/9504002",
"authors": [
"T. Jacobs",
"S. Sridhar",
"C. T. Rieck",
"K. Scharnberg",
"T. Wolf",
"J. Halbritter"
],
"categories": [
"supr-con",
"cond-mat.supr-con"
],
"doi": "10.1016/0022-3697(95)00264-2",
"title": "Microwave Surface Impedance of YBCO:123 crystals: Experiment and comparison to a d-wave model",
"url": "https://arxiv.org/abs/supr-con/9504002"
},
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