{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Liu YB"],"funding":["National Natural Science Foundation of China (National Science Foundation of China)"],"pagination":["7926"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC10692084"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["14(1)"],"pubmed_abstract":["The material realization of charge-4e/6e superconductivity (SC) is a big challenge. Here, we propose to realize charge-4e SC in maximally-twisted homobilayers, such as 45<sup>∘</sup>-twisted bilayer cuprates and 30<sup>∘</sup>-twisted bilayer graphene, referred to as twist-bilayer quasicrystals (TB-QC). When each monolayer hosts a pairing state with the largest pairing angular momentum, previous studies have found that the second-order interlayer Josephson coupling would drive chiral topological SC (TSC) in the TB-QC. Here we propose that, above the T<sub>c</sub> of the chiral TSC, either charge-4e SC or chiral metal can arise as vestigial phases, depending on the ordering of the total- and relative-pairing-phase fields of the two layers. Based on a thorough symmetry analysis to get the low-energy effective Hamiltonian, we conduct a combined renormalization-group and Monte-Carlo study and obtain the phase diagram, which includes the charge-4e SC and chiral metal phases."],"journal":["Nature communications"],"pubmed_title":["Charge-4e superconductivity and chiral metal in 45°-twisted bilayer cuprates and related bilayers."],"pmcid":["PMC10692084"],"funding_grant_id":["11674025"],"pubmed_authors":["Wu C","Liu YB","Yang F","Zhou J"],"additional_accession":[]},"is_claimable":false,"name":"Charge-4e superconductivity and chiral metal in 45°-twisted bilayer cuprates and related bilayers.","description":"The material realization of charge-4e/6e superconductivity (SC) is a big challenge. Here, we propose to realize charge-4e SC in maximally-twisted homobilayers, such as 45<sup>∘</sup>-twisted bilayer cuprates and 30<sup>∘</sup>-twisted bilayer graphene, referred to as twist-bilayer quasicrystals (TB-QC). When each monolayer hosts a pairing state with the largest pairing angular momentum, previous studies have found that the second-order interlayer Josephson coupling would drive chiral topological SC (TSC) in the TB-QC. Here we propose that, above the T<sub>c</sub> of the chiral TSC, either charge-4e SC or chiral metal can arise as vestigial phases, depending on the ordering of the total- and relative-pairing-phase fields of the two layers. Based on a thorough symmetry analysis to get the low-energy effective Hamiltonian, we conduct a combined renormalization-group and Monte-Carlo study and obtain the phase diagram, which includes the charge-4e SC and chiral metal phases.","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023 Dec","modification":"2025-04-04T09:39:39.576Z","creation":"2025-04-04T09:39:39.576Z"},"accession":"S-EPMC10692084","cross_references":{"pubmed":["38040764"],"doi":["10.1038/s41467-023-43782-2"]}}