{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"6d081d20c9c5cdf2c3764ee45892da2ba051642e5711ac1b04e5963dd30ebad5","created":"2026-10-03T07:18:00Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"2b1b24bed1447eb52cf85fbe783a153b4db9e68a73777953023c7933b7965578","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"yes-no","assisted_by":[],"external_id":"cm.majorana-zero-modes.nanowire-topological-phase","kind":"well-posed","literature_status":"contested","n":"1","parents":[],"plain":"Many experiments on superconductor-coated semiconductor wires saw signals expected from Majorana modes, but ordinary bound states caused by disorder give similar signals, so it is unproven that any wire has become topological.","posed_since":"2010","precise":"For InAs-Al or InSb-Al hybrid nanowires in a parallel magnetic field, establish whether a topological phase exists: bulk gap closing and reopening at Zeeman energy $E_Z = \\sqrt{\\Delta^2 + \\mu^2}$, with zero-bias conductance peaks at both ends whose splitting decays exponentially with wire length. An answer is yes or no, based on three-terminal data passing pre-registered criteria that disorder simulations show trivial states cannot pass.","problem_ref":null,"references":"","settled_by":"Three-terminal nonlocal conductance showing gap reopening and end-to-end correlated zero modes, reproduced across devices with data and analysis code released.","status_note":"Microsoft's topological-gap-protocol devices (Phys. Rev. B 107, 245423, 2023) were challenged in a 2025 comment (arXiv:2502.19560) arguing that the protocol outcome depends on analysis choices.","title":"Has a semiconductor nanowire reached the topological superconducting phase","topic_ref":"22b1c284f405dca649b67435bdabcd2fe6cb89dca2e57c0dd9c49b870c73940e"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"dce8117d256a2b12af17c37950be9b00c662b51d3774ee15aab65257c7cbbcc5","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"070e63acc3b4bee7dc595ee15c808e89a39fc2022f883b45f8cf55074faa485d","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"Hgn3YVPXHZciTQKupLkALTdtusFE_E-Lk-rcNPr0cuNfq5cIAsp0WPtqswhqVu41NKKwPk38P1MkSaQo8fOSBg"},"schema":"pubphys.envelope/1"},"record_hash":"dce8117d256a2b12af17c37950be9b00c662b51d3774ee15aab65257c7cbbcc5","leaf_index":1081}