Intimate relations between electronic nematic, d-density wave and d-wave superconducting states
Abstract
This paper consists of two important theoretical observations on the interplay between l = 2 condensates; d-density wave (ddw), electronic nematic and d-wave superconducting states. (1) There is SO(4) invariance at a transition between the nematic and d-wave superconducting states. The nematic and d-wave pairing operators can be rotated into each other by pseudospin SU(2) generators, which are s-wave pairing and electron density operators. The difference between the current work and the previous O(4) symmetry at a transition between the ddw and d-wave superconducting states (Nayak 2000 Phys. Rev. B 62 R6135) is presented. (2) The nematic and ddw operators transform into each other under a unitary transformation. Thus, when a Hamiltonian is invariant under such a transformation, the two states are exactly degenerate. The competition between the nematic and ddw states in the presence of a degeneracy breaking term is discussed.
Cite
@article{arxiv.0709.1469,
title = {Intimate relations between electronic nematic, d-density wave and d-wave superconducting states},
author = {Hae-Young Kee and Hyeonjin Doh and Thomas Grzesiak},
journal= {arXiv preprint arXiv:0709.1469},
year = {2008}
}
Comments
4 pages, 1 figures, updated to the published version