TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.15.6.230
TI  - Phenomenological XXZ model for the competition between superconductivity and charge order in cuprates
PY  - 2023/12/07
UR  - https://scipost.org/SciPostPhys.15.6.230
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 15
IS  - 6
SP  - 230
A1  - Venditti, Giulia
AU  - Maccari, Ilaria
AU  - Lorenzana, José
AU  - Caprara, Sergio
AB  - We argue that there is a special doping point in the phase diagram of cuprates, such that the condensation of holes into a charge-ordered and a superconducting phase are degenerate in energy but with an energy barrier in between. We present Monte Carlo simulations of a phenomenological XXZ model for this problem without and with quenched disorder in two dimensions. While in the clean case charge order and superconductivity are separated by a first-order line which is nearly independent of temperature, in the presence of quenched disorder charge order is fragmented into domains separated by superconducting filaments reminiscent of the supersolid behaviour in $^4$He. Assuming weak interlayer couplings, the resulting phase diagram of the three-dimensional system is in good agreement with the experiments.
ER  -

@Article{10.21468/SciPostPhys.15.6.230,
	title={{Phenomenological XXZ model for the competition between superconductivity and charge order in cuprates}},
	author={Giulia Venditti and Ilaria Maccari and Jose Lorenzana and Sergio Caprara},
	journal={SciPost Phys.},
	volume={15},
	pages={230},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.15.6.230},
	url={https://scipost.org/10.21468/SciPostPhys.15.6.230},
}