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• W2904351680 abstract "We introduce a microscopic model aimed at describing the behavior of fermionic excitations in the background of a magnetic texture called spin-vortex checkerboard. This texture was proposed previously as a possible alternative to stripes to interpret the experimental phenomenology of spin and charge modulations in 1/8-doped lanthanum cuprates. The model involves two kinds of interacting fermionic excitations residing in spin-rich and spin-poor regions of the modulated structure. It is a generalization of another model developed earlier for the so-called grid checkerboard. The principal terms of our model describe the decay of fermionic pairs belonging to spin-poor regions into single fermions occupying spin-rich regions and vice versa. These terms induce intricate fermionic correlations throughout the system but fall short of inducing superconductivity unless arbitrarily small hopping terms are added to the model Hamiltonian. We present the mean-field solution of the model, including, in particular, the temperature dependence of the energy gap. The latter is found to be in a good overall agreement with available experimental data for high-$T_c$ cuprate superconductors." @default.
• W2904351680 created "2018-12-22" @default.
• W2904351680 creator A5008439042 @default.
• W2904351680 creator A5017665439 @default.
• W2904351680 creator A5057387454 @default.
• W2904351680 date "2019-11-04" @default.
• W2904351680 modified "2023-09-26" @default.
• W2904351680 title "Modeling superconductivity in the background of a spin-vortex checkerboard" @default.
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• W2904351680 doi "https://doi.org/10.1103/physrevb.100.174503" @default.
• W2904351680 hasPublicationYear "2019" @default.
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