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Ladderlike optical conductivity in the spin-fermion model
2019
Physical review B
In the nested limit of the spin-fermion model for the cuprates, one-dimensional physics in the form of half-filled two-leg ladders emerges. We show that the renormalization group flow of the corresponding ladder is towards the d-Mott phase, a gapped spin-liquid with short-ranged d-wave pairing correlations, and reveals an intermediate SO(5)×SO(3) symmetry. We use the results of the renormalization group in combination with a memory-function approach to calculate the optical conductivity of the
doi:10.1103/physrevb.99.115110
fatcat:uq6m55ay5ngqxeo323dbcgqqxi