{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"133ec9d009b61467afe10f6e57c0cfda694a024750276b8ba5880305d74ec07d","created":"2026-10-15T23:43:22Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["54b33276e11f43af61d6e6d94c25b4e24d91484aaf557574c618ce9063443929","ce59fb6cd812fc05906d0c60a71c75ea22bc686bcf38e7c3ef7010834d98ee7b"],"salt":"d2b6ab71cfbbbc411d9761e0df4a7604d42ff2a3a29741e0ecb18fb45e7cd289","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"yes-no","assisted_by":[],"external_id":"cm.iron-based.bogoliubov-fermi-surface","kind":"well-posed","literature_status":"contested","n":"2","parents":[],"plain":"Beyond the nematic critical point, $\\mathrm{FeSe}1-x\\mathrm{S}x$ keeps many zero-energy excitations inside its superconducting state, which may signal surfaces of zero-energy quasiparticles (Bogoliubov Fermi surfaces) or simply disorder.","posed_since":"","precise":"For tetragonal FeSe1-xSx with $x > 0.17$, determine whether the large residual zero-energy density of states measured by specific heat, thermal conductivity and tunneling comes from Bogoliubov Fermi surfaces of a time-reversal-breaking or interband-pairing state, or from pair breaking by disorder. An answer is a measurement of the dependence of the residual density of states on controlled disorder and field, compared with both scenarios.","problem_ref":"54b33276e11f43af61d6e6d94c25b4e24d91484aaf557574c618ce9063443929","references":"","settled_by":"Electron-irradiation series and muSR or Kerr tests for time-reversal breaking on the same crystals, together with field-dependent tunneling.","status_note":"","title":"Does tetragonal FeSe1-xSx host Bogoliubov Fermi surfaces?","topic_ref":null},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"d5156483682ff4396fa42e454a655c65366ab0e2ad63ab81a294a3d68fe1e994","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"cd2d96fa52927b23969974d8e11cd34bd63583b7174237d38126e3123563bede","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"7OQN1Ma0CEMZQpeYglBZXV5wHGP8dMveXFE9bWzlIaU9TrvveJ6LJKgZO9tBDCDM2mOqvd1JNEa3KzAMmV27AA"},"schema":"pubphys.envelope/1"},"record_hash":"d5156483682ff4396fa42e454a655c65366ab0e2ad63ab81a294a3d68fe1e994","leaf_index":2876}