{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"52f18b086b0ae11b89f905b19dc4589e51d52b4e46a02f3c1bf6a952f50af7a5","created":"2026-10-03T07:17:51Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"a7f2a5c4f0faf72e6eaee90c06d206b7ace0c639920659f1f6c0d1355dbb322f","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"cm.magnetic-topological-insulators","field":"cm","n":"1","review_cite":"A. Sekine, K. Nomura, Axion electrodynamics in topological materials, Journal of Applied Physics, 2021","review_link":"https://arxiv.org/abs/2011.13601","review_verified":"true","summary":"Adding magnetism to a topological insulator opens an energy gap in its conducting surface states, giving a quantized Hall current without a magnetic field, or, when top and bottom surfaces are magnetized oppositely, an axion insulator (a material whose electric and magnetic responses are locked together by a universal constant).","title":"Magnetic topological insulators and axion electrodynamics","topic_ref":null,"why":"They realize quantized responses at zero field, relevant for resistance standards, and test the axion electrodynamics predicted for topological matter."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"eef15c72032faa1168fa9014695d510856a871a88df07cd67b817c3027aab793","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"05a68ad2a7b39e6eea40e05c2f285afe3622bd28c87b8e365059f1a3d9ec32fe","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"3PqLiK2-LjtEoG4EKLlDf5TqwGvVHEL97PHtBfp_Z4Xnc3BefZ_LzAvfseCwLX0o10ppVhueMoypArOwr0iCDQ"},"schema":"pubphys.envelope/1"},"record_hash":"eef15c72032faa1168fa9014695d510856a871a88df07cd67b817c3027aab793","leaf_index":152}