Thermodynamic phase diagram of the competition between superconductivity and charge order in cuprates
arXiv:2306.17094 · doi:10.21468/SciPostPhys.15.6.230
Abstract
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 into a superconducting phase are degenerate in energy but with an energy barrier in between. We present a Monte Carlo simulation of this problem without and with quenched disorder. 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 behavior in He. The resulting phase diagram is in good agreement with the experiments.
arXiv comment32 pages, 18 figures, Submitted to SciPost Physics
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