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Violation of the Wiedemann-Franz Law in a Large-N Solution of the t-J Model | | A. Houghton
; S. Lee
; J. B. Marston
; | | Date: |
5 Mar 2002 | | Journal: | Phys. Rev. B65, 220503 (2002) | | Subject: | Strongly Correlated Electrons; Superconductivity | cond-mat.str-el cond-mat.supr-con | | Abstract: | We show that the Wiedemann-Franz law, which holds for Landau Fermi liquids, breaks down in a large-n treatment of the t-J model. The calculated ratio of the in-plane thermal and electrical conductivities agrees quantitatively with experiments on the normal state of the electron-doped Pr_{2-x}Ce_xCuO_4 (x = 0.15) cuprate superconductor. The violation of the Wiedemann-Franz law in the uniform phase contrasts with other properties of the phase that are Fermi liquid like. | | Source: | arXiv, cond-mat/0203068 | | Services: | Forum | Review | PDF | Favorites | |
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