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19 April 2024 |
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Spin-Orbit Ordering, Momentum Space Coexistence, and Cuprate Superconductivity | | W. Vincent Liu
; Frank Wilczek
; | | Date: |
29 Dec 2003 | | Subject: | Strongly Correlated Electrons; Superconductivity | cond-mat.str-el cond-mat.supr-con | | Abstract: | Motivated by the energetic advantage of achieving coherent enhancement of effective spin-dependent interactions through approximate nesting, we propose specific forms of spin ordering, whose form varies over the Fermi surface, for the cuprate superconductors. Competing "spin-orbit" orderings involving order parameters in spatial $d_{x^2-y^2}$ and $d_{xy}$ waves at commensurate and incommensurate wavevectors, phase separated in momentum space, support behavior suggestive of observed phenomena. The $d_{xy}$ spin-orbit fluctuation induces an effective interaction that favors $d_{x^2-y^2}$-wave pairing, as required for the observed superconductivity. Anisotropic spin susceptibility is a crucial prediction of our mechanism. | | Source: | arXiv, cond-mat/0312685 | | Services: | Forum | Review | PDF | Favorites | |
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