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26 April 2024 |
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Superconducting fluctuations in the Luther-Emery liquid | | Edmond Orignac
; Didier Poilblanc
; | | Date: |
4 Mar 2003 | | Journal: | Phys. Rev. B 68, 052504 (2003) DOI: 10.1103/PhysRevB.68.052504 | | Subject: | Strongly Correlated Electrons; Superconductivity | cond-mat.str-el cond-mat.supr-con | | Affiliation: | Ecole Normale Superieure, Universite Toulouse III | | Abstract: | The single-particle superconducting Green’s functions of a Luther-Emery liquid is computed by bosonization techniques. Using a formulation introduced by Poilblanc and Scalapino [Phys. Rev. B v. 66, art. 052513 (2002)], an asymptotic expression of the superconducting gap is deduced in the long wavelength and small frequency limit. Due to superconducting phase fluctuations, the gap exhibits as a function of size L a (1/L)^{1/2K_
ho} power-law decay as well as an interesting singularity at the spectral gap energy. Similarities and differences with the 2-leg t-J ladder are outlined. | | Source: | arXiv, cond-mat/0303053 | | Services: | Forum | Review | PDF | Favorites | |
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