{"schema":"pubphys.bundle/1","record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"d7474e7a76179c153d451cb613ca355660a6e6f08b4d1a001ac93254054aec2a","created":"2026-10-03T07:17:59Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011","d36e1b4be6bb327bab375ec2d1f5b9dc572d46dc152cd470ef9ecf37bfba08c5"],"salt":"d5cdcacdef916770e76b3d30ac4868a698874e4e4799c4eeec47f9ec8e6716b6","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"yes-no","assisted_by":[],"external_id":"cm.fese-sto-interface.replica-band-origin","kind":"well-posed","literature_status":"contested","n":"1","parents":[{"note":"","parent_revision":"d36e1b4be6bb327bab375ec2d1f5b9dc572d46dc152cd470ef9ecf37bfba08c5","relation":"special_case"}],"plain":"Photoemission shows faint copies of the FeSe bands shifted by the energy of a substrate vibration, read as strong electron-phonon coupling. Others argue the copies form when emitted electrons lose energy after leaving the sample.","posed_since":"2014","precise":"Lee et al. (2014) observed replica bands offset by $\\sim 100\\,\\mathrm{meV}$, interpreted as $q \\sim 0$ electron-phonon coupling with SrTiO3 phonons; Li and Sawatzky (2018) proposed extrinsic energy loss of photoelectrons. Determine whether the replicas are intrinsic spectral weight of the FeSe electrons and, if so, the coupling constant they imply.","problem_ref":null,"references":"","settled_by":"Comparison with probes free of photoelectron energy loss (tunneling spectroscopy, momentum-resolved electron energy-loss spectroscopy) and with photoemission on FeSe over substrates with different phonons at matched doping.","status_note":"","title":"Are photoemission replica bands evidence of interfacial forward 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