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Письма в Журнал экспериментальной и теоретической физики, 2010, том 91, выпуск 8, страницы 451–456
(Mi jetpl701)
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Эта публикация цитируется в 3 научных статьях (всего в 3 статьях)
КОНДЕНСИРОВАННЫЕ СРЕДЫ
Order parameter sign-reversal near $s_\pm$-superconductor surface
A. M. Bobkov, I. V. Bobkova Institute of Solid State Physics
Аннотация:
The superconducting order parameter and LDOS spectra near an impenetrable surface are studied on the basis of selfconsistent calculations for a two band superconductor with nodeless extended s-wave order parameter symmetry, as possibly realized in Fe-based high-temperature superconductors. It is found that for a wide range of parameters the spatial behavior of the order parameter at a surface is not reduced to a trivial suppression. If the interband scattering at a surface is of the order of the intraband one or dominates it, it can be energetically favorable to change the symmetry of the superconducting state near the surface from $s_{\pm}$ to conventional $s$-wave. The range of existing of this surface conventional superconductivity is very sensitive to the relative values of interband and intraband pairing potentials. It is shown that the LDOS spectra near the surface can qualitatively differ upon calculating with and without taking into account the selfconsistency of the order parameter.
Поступила в редакцию: 01.02.2010 Исправленный вариант: 12.03.2010
Образец цитирования:
A. M. Bobkov, I. V. Bobkova, “Order parameter sign-reversal near $s_\pm$-superconductor surface”, Письма в ЖЭТФ, 91:8 (2010), 451–456; JETP Letters, 91:8 (2010), 415–420
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/jetpl701 https://www.mathnet.ru/rus/jetpl/v91/i8/p451
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Страница аннотации: | 188 | PDF полного текста: | 72 | Список литературы: | 26 |
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