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Theory of c-axis Josephson tunneling in d-wave superconductors | | Kazumi Maki
; Stephan Haas
; | | Date: |
16 Dec 2002 | | Subject: | Superconductivity | cond-mat.supr-con | | Abstract: | The temperature and angular dependence of the c-axis Josephson current and the superfluid density in layered d-wave superconductors are studied within the framework of an extended Ambegaokar-Baratoff formalism. In particular, the effects of angle-dependent tunneling matrix elements and Andreev scattering at grain boundaries are taken into account. These lead to strong corrections of the low-temperature behavior of the plasma frequency and the Josephson current. Recent c-axis measurements on the cuprate high-temperature superconductors HgBa_2CaCu_{1+delta} and Bi_2Sr_2CaCu_2O_{8+delta} can therefore be interpreted to be consistent with a d-wave order parameter. | | Source: | arXiv, cond-mat/0301280 | | Services: | Forum | Review | PDF | Favorites | |
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