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Article overview
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Absence of the zero bias peak in vortex tunneling spectra of high temperature superconductors? | | Congjun Wu
; Tao Xiang
; Zhao-Bin Su
; | | Date: |
14 Jul 2000 | | Subject: | Superconductivity; Strongly Correlated Electrons | cond-mat.supr-con cond-mat.str-el | | Abstract: | The c-axis tunneling matrix of high-Tc superconductors is shown to depend strongly on the in-plane momentum of electrons and vanish along the four nodal lines of the d(x^2-y^2)-wave energy gap. This anisotropic tunneling matrix suppresses completely the contribution of the most extended quasiparticles in the vortex core to the c-axis tunneling current and leads to a spectrum similar to that of a nodeless superconductor. Our results give a natural explanation of the absence of the zero bias peak as well as other features observed in the vortex tunneling spectra of high-Tc cuprates. | | Source: | arXiv, cond-mat/0007243 | | Services: | Forum | Review | PDF | Favorites | |
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