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https://ir.swu.ac.th/jspui/handle/123456789/15346| Title: | Reduced-gap ratio of high-Tc cuprates within the d-wave two-dimensional van hove scenario |
| Authors: | Pakokthom C. Krunavakarn B. Udomsamuthirun P. Yoksan S. |
| Keywords: | Approximation theory Band structure Fermi level High temperature superconductors Integral equations Integration Photoemission Two dimensional Waves Bismuth compounds Electronic density of states Mathematical models Numerical analysis Superconducting transition temperature BCS d-wave superconductors Gap-to-Tc ratio Van Hove singularity Two-dimensional Van Hove scenario Oxide superconductors |
| Issue Date: | 1998 |
| Abstract: | The gap-to-Tc ratio (R) of high-temperature superconductors is calculated in the context of d symmetry of the superconducting order parameter and a two-dimensional Van Hove singularity in the density of states, using the BCS theory for weak coupling. Exact numerical calculation and an analytic formula for R are given. The ratios are found to be substantially larger than the BCS weak coupling limit of 3.53. The overall dependence of R on ωD/Tc, where ωD is the cutoff frequency, is given. © 1998 Plenum Publishing Corporation. |
| URI: | https://ir.swu.ac.th/jspui/handle/123456789/15346 https://www.scopus.com/inward/record.uri?eid=2-s2.0-0032132061&doi=10.1023%2fA%3a1022645630932&partnerID=40&md5=c9ad2cd38e913125771078eccc8cdc2f |
| ISSN: | 8961107 |
| Appears in Collections: | Scopus 1983-2021 |
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