Thermal conductivity of overdopedBaFe1.73Co0.27As2single crystal: Evidence for nodeless multiple superconducting gaps and interband interactions
| العنوان: | Thermal conductivity of overdopedBaFe1.73Co0.27As2single crystal: Evidence for nodeless multiple superconducting gaps and interband interactions |
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| المؤلفون: | S. Y. Zhou, Lei Fang, Xuepeng Qiu, Hai-Hu Wen, Chi Zhang, T. Y. Guan, J. K. Dong, Shuo Li, Peng Cheng |
| المصدر: | Physical Review B. 81 |
| بيانات النشر: | American Physical Society (APS), 2010. |
| سنة النشر: | 2010 |
| مصطلحات موضوعية: | Physics, Superconductivity, Thermal conductivity, Condensed matter physics, Plane (geometry), Condensed Matter::Superconductivity, Beta (plasma physics), Density of states, Electron, Condensed Matter Physics, Single crystal, Electronic, Optical and Magnetic Materials, Magnetic field |
| الوصف: | The in-plane thermal conductivity kappa of overdoped FeAs-based superconductor BaFe1.73Co0.27As2 (T-c=8.1 K) single crystal was measured down to 80 mK. In zero field, the residual linear term kappa(0)/T is negligible, suggesting a nodeless superconducting gap in the ab plane. In magnetic field, kappa(0)/T increases rapidly, very different from that of conventional s-wave superconductors. This anomalous kappa(0)/T(H) may reveal an exotic superconducting gap structure in overdoped BaFe1.73Co0.27As2: the vanishing hole (beta) pocket has a much larger gap than the electron (gamma and delta) pockets which contain most of the carriers. Such an exotic gap structure is an evidence for superconducting state induced by interband interactions, in which the band with the smaller density of states has a larger gap. |
| تدمد: | 1550-235X 1098-0121 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::ce08dab44e2079d5d65cfbd23d4dad85 https://doi.org/10.1103/physrevb.81.094520 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........ce08dab44e2079d5d65cfbd23d4dad85 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1550235X 10980121 |
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