{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"7ca08caa423d9d469d3e0c21dc144b77bb704ff9446b10f99b929d465ed113aa","created":"2026-10-03T07:18:00Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"68087c4033b86a6e4b0281d9a4ffb06bacf2fdfff9ae05ea724157435f3f57df","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"classification","assisted_by":[],"external_id":"cm.moire-graphene-superconductivity.trilayer-pauli-violation","kind":"well-posed","literature_status":"open","n":"1","parents":[],"plain":"In magic-angle trilayer graphene, superconductivity survives in-plane magnetic fields two to three times larger than the field that breaks pairs of electrons with opposite spins, suggesting pairs with parallel spins (spin triplet).","posed_since":"2021","precise":"Cao et al. (arXiv:2103.12083, 2021) found in magic-angle twisted trilayer graphene an in-plane critical field exceeding the Pauli limit $B_{P} \\sim 18.6\\ \\mathrm{kG}$ per kelvin of $T_{c}$ by a factor 2 to 3, and re-entrant superconductivity at higher in-plane fields. Determine whether the pairs are spin-triplet, a singlet-triplet mixture allowed by mirror-symmetry breaking under displacement field, or singlets protected by spin-orbit or orbital effects. An answer gives the spin structure of the order parameter with direct evidence.","problem_ref":null,"references":"","settled_by":"Spin-resolved tunnelling or a measurement of the spin susceptibility below $T_c$, or Josephson coupling to a known spin-singlet superconductor.","status_note":"","title":"Spin state of Cooper pairs in magic-angle twisted trilayer graphene","topic_ref":"772455301d33c1cea6c0cbed25bb79fa87ea5b401f9a667e1c0b4056e25a3e52"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"ba41fd79a190ada6a800130639b62a78eaa7a607ec3adc0864ee26a4fb7571d0","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"c3f654545891fa47364766d065a9dc88ef5f6a2bb078157546a2863d652ab924","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"CNZlpKhRNw4TTJcOKU_KU19tXnslzb7-vbta2GT1o6m4sU-EiYMXUNnaG2MEUikme-GNvxaEQ-O_QSlrrbQgAw"},"schema":"pubphys.envelope/1"},"record_hash":"ba41fd79a190ada6a800130639b62a78eaa7a607ec3adc0864ee26a4fb7571d0","leaf_index":1099}