{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"709d795698c20b18d1e6c006fb4bda6161f39978f52a91a5f9cf6d46b72cc3b0","created":"2026-10-03T07:18:01Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"818422a8544f6012a42b706218ac1af67cf3437f09555804e27c7cf67b46d988","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"mechanism","assisted_by":[],"external_id":"cm.skyrmion-magnets.centrosymmetric-mechanism","kind":"phenomenon","literature_status":"contested","n":"1","parents":[],"plain":"Most skyrmions appear in crystals lacking mirror symmetry, where a twisting interaction favors them. Gd2PdSi3 and GdRu2Si2 have that symmetry yet host very small skyrmions, and the competing explanations involve geometric frustration or interactions carried by conduction electrons.","posed_since":"2019","precise":"For Gd2PdSi3 (triangular) and GdRu2Si2 (tetragonal), with skyrmion-lattice periods of about 2 to 3 nm, determine which mechanism stabilizes the multi-$q$ state: frustrated RKKY couplings, Fermi-surface-driven biquadratic and four-spin interactions, or dipolar and anisotropy effects. An answer is a microscopic model derived from the measured band structure that reproduces the field-temperature phase diagram and the modulation vectors.","problem_ref":null,"references":"","settled_by":"Ab initio spin models compared with resonant x-ray and neutron data over the full phase diagram, plus pressure or doping tuning of the Fermi surface.","status_note":"","title":"What stabilizes skyrmion lattices in centrosymmetric magnets like Gd2PdSi3?","topic_ref":"51739886d29ed7915aad97df85d96eccb4ca26bfda8367c9539ae8df53e14179"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"23c6b0b7b2b338f800c20d7d64166f3e18a69ab0e72b65ed1c1a69d6c6e0b824","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"526abf3436a56d894bccd28d61dea0ffcc144c1f62a19ca495f766a77ca6124c","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"JpoiqdSdlv4KiwnmWqkBVuiqLZnBfIZr1njVKitRZF12VBAFHEj36fMW9DVtoUFNiCBVL8IcGjd5meFd4OrZDg"},"schema":"pubphys.envelope/1"},"record_hash":"23c6b0b7b2b338f800c20d7d64166f3e18a69ab0e72b65ed1c1a69d6c6e0b824","leaf_index":1163}