{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"2736fc63cdf17788b48ab23bee7011bce9077bf8c3220ae03b254155afc60b1e","created":"2026-10-03T07:18:01Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"fe82510d4d8eac65bf916b501be44ac5df64abe58d259c883467a41a92784960","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"identification","assisted_by":[],"external_id":"cm.weyl-semimetals.zrte5-hall-plateaus","kind":"well-posed","literature_status":"contested","n":"1","parents":[],"plain":"Thick crystals of ZrTe5 show Hall-resistance plateaus resembling the quantum Hall effect, which normally needs a two-dimensional sample, and whether a field-induced charge-density wave causes them is unsettled.","posed_since":"2019","precise":"In bulk ZrTe5 (and HfTe5), Tang et al. (Nature, 2019) reported Hall plateaus with $\\rho_{xy}\\sim (1/2)(h/e^2)\\lambda_z$, $\\lambda_z$ the Fermi wavelength along the field, attributed to a field-induced charge-density wave in the quantum limit. Determine whether a density modulation and gap exist or whether the plateau-like features come from quantum-limit band physics alone. An answer is an identification backed by direct structural or spectroscopic evidence.","problem_ref":null,"references":"","settled_by":"X-ray diffraction or ultrasound in the quantum limit detecting or excluding a density modulation with wavelength $\\sim \\lambda_z/2$, with transport on the same samples.","status_note":"Thermodynamic and transport studies from 2021 argued the plateaus arise without a charge-density wave; no direct structural detection as of 2026.","title":"Origin of Hall plateaus in bulk ZrTe5","topic_ref":"2be8f71440ef80a2f6a5c39e87f067e4bb75be81175ba895e94387a2b67affde"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"f607d09c411d501349043a171086afd8d65d4d3c6fa57df7de567f1ea131efb4","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"f77a21bb9657e2a2aa80fdd4c9e8e0c5ea2d4293594d714dbde6830d931f599a","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"mujjCyH7JLLKmkg7WRySGGBpYqLdcseTmqTREvgD8JgPUSX-yjvpaovL1u8v1OIVfBOr-Yiuuu8PAbZpBLQXAQ"},"schema":"pubphys.envelope/1"},"record_hash":"f607d09c411d501349043a171086afd8d65d4d3c6fa57df7de567f1ea131efb4","leaf_index":1217}