Orbital entanglement mechanism of superconductivity in cuprates

Alexander Mitrofanov; Sergei Urazhdin

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arXiv · 2109.13019

Orbital entanglement mechanism of superconductivity in cuprates

Alexander Mitrofanov·Sergei Urazhdin

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Abstract

We utilize a 1d Hubbard model to show that the superconductivity in cuprate superconductors likely arises due to the orbital entanglement between holes in the copper oxide plane mediated by orbitally-selective charge hopping. The main role of doping required to achieve superconductivity in cuprates is to suppress the Mott correlations and orbital ordering. The proposed mechanism explains superconductivity in other unconventional superconductors, and provides guidance in the search for new high-temperature superconductors.

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Alexander Mitrofanov, Sergei Urazhdin. 2021-09-27. Orbital entanglement mechanism of superconductivity in cuprates. https://arxiv.org/abs/2109.13019

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