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At elevated temperature noise obscured Kelvin oscillations and some decay rates could not be measured accurately. The article proposes further frequency-controlled and surface-characterization experiments. Its printed free-core radius uses 1.3 × 10⁻⁸ Å, a questionable unit that is not silently corrected here. The exact journal version and raw data were not reviewed.", "area": "Superfluidity and quantum fluids", "topic": "Physics", "year": 2001, "lane": "HUMAN", "result": "EMPIRICAL", "package_id": "donev-hough-zieve-superfluid-vortex-pinning-depinning-2001", "target": { "record_id": "urn:uuid:08f7687b-7a0d-4ac2-a439-8894f90989d3", "version": 1, "content_hash": "sha256:a28b248a265dbb6b70c092247ce737475cad4b199c151db9917b8c2a5829e38b" }, "humans": [ "L. A. K. Donev", "L. Hough", "R. J. Zieve" ], "authors_complete": true, "human_role_note": "These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. 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At elevated temperature noise obscured Kelvin oscillations and some decay rates could not be measured accurately. The article proposes further frequency-controlled and surface-characterization experiments. Its printed free-core radius uses 1.3 × 10⁻⁸ Å, a questionable unit that is not silently corrected here. 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Donev", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Depinning of a superfluid vortex line by Kelvin waves", "url": "https://arxiv.org/pdf/cond-mat/0010240v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "L. Hough", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Depinning of a superfluid vortex line by Kelvin waves", "url": "https://arxiv.org/pdf/cond-mat/0010240v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "R. J. Zieve", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Depinning of a superfluid vortex line by Kelvin waves", "url": "https://arxiv.org/pdf/cond-mat/0010240v2" } } ], "evidence": [ { "description": "Bibliographic/stated-result source; not a WRS proof verification", "id": "source-0", "kind": "source_reference", "source": { "citation": "Depinning of a superfluid vortex line by Kelvin waves", "url": "https://arxiv.org/pdf/cond-mat/0010240v2" } } ], "origin": "HUMAN_LEGACY", "record_profile": "wrs-local-research-notes-0.1", "record_type": "research_note", "rrp_version": "0.1", "scope": { "description": "The result concerns the two specific cells and stationary post-rotation measurements. Pinning was inferred from the circulation signal, with limited event counts; the Kelvin-wave mechanism is the authors’ interpretation, not an independently isolated causal test. At elevated temperature noise obscured Kelvin oscillations and some decay rates could not be measured accurately. The article proposes further frequency-controlled and surface-characterization experiments. Its printed free-core radius uses 1.3 × 10⁻⁸ Å, a questionable unit that is not silently corrected here. The exact journal version and raw data were not reviewed.", "domain": "Superfluidity and quantum fluids" }, "sources": [ { "citation": "Depinning of a superfluid vortex line by Kelvin waves", "url": "https://arxiv.org/pdf/cond-mat/0010240v2" } ], "statement": "# Temperature-dependent pinning and depinning of a single superfluid vortex\n\nDonev, Hough and Zieve used a vibrating wire to follow a single partially attached vortex in superfluid helium. In their rougher cell, pinning became more frequent as temperature rose; a smoother cell showed much less pinning. Varying the wire motion changed the observed decay, and the authors proposed excitation of Kelvin waves as a mechanism that helps a vortex unpin.\n\n## Scientific scope\n\nThe result concerns the two specific cells and stationary post-rotation measurements. Pinning was inferred from the circulation signal, with limited event counts; the Kelvin-wave mechanism is the authors’ interpretation, not an independently isolated causal test. At elevated temperature noise obscured Kelvin oscillations and some decay rates could not be measured accurately. The article proposes further frequency-controlled and surface-characterization experiments. Its printed free-core radius uses 1.3 × 10⁻⁸ Å, a questionable unit that is not silently corrected here. The exact journal version and raw data were not reviewed.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nL. A. K. Donev; L. Hough; R. J. Zieve\n\nThese are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.\n\n\n\n## Original sources\n\n- [Depinning of a superfluid vortex line by Kelvin waves](https://arxiv.org/pdf/cond-mat/0010240v2)\n", "summary": "Donev, Hough and Zieve used a vibrating wire to follow a single partially attached vortex in superfluid helium. In their rougher cell, pinning became more frequent as temperature rose; a smoother cell showed much less pinning. Varying the wire motion changed the observed decay, and the authors proposed excitation of Kelvin waves as a mechanism that helps a vortex unpin.", "title": "Temperature-dependent pinning and depinning of a single superfluid vortex" }, "record_id": "urn:uuid:08f7687b-7a0d-4ac2-a439-8894f90989d3", "version": 1, "source_ref": { "record_id": "urn:uuid:08f7687b-7a0d-4ac2-a439-8894f90989d3", "version": 1, "content_hash": "sha256:a28b248a265dbb6b70c092247ce737475cad4b199c151db9917b8c2a5829e38b" }, "export_view": "wrs-public-editorial-view-1", "public_view_hash": "sha256:4a35c4cf776310b2efc29778f8bd47b14727b1d1b56a040cac3d4e70139df1a9" }, "target": { "record_id": "urn:uuid:08f7687b-7a0d-4ac2-a439-8894f90989d3", "version": 1, "content_hash": "sha256:a28b248a265dbb6b70c092247ce737475cad4b199c151db9917b8c2a5829e38b" }, "published_grade": { "profile": "wrs-published-grade-1", "edition": "2026-10-28.1", "id": "donev-hough-zieve-superfluid-vortex-pinning-depinning-2001", "entry_id": "donev-hough-zieve-superfluid-vortex-pinning-depinning-2001", "revision": 1, "title": "Temperature-dependent pinning and depinning of a single superfluid vortex", "context": "Superfluidity and quantum fluids", "track": "Source-reported experimental result or reusable measurement method", "band": "B", "modifier": "+", "status": "PROVISIONAL_EDITORIAL", "assessed_on": "2026-10-28", "evidence_cutoff": "2026-10-28", "achievement_state": "SUPPORTED_SCOPED_RESULT", "what_changed": "Donev, Hough and Zieve used a vibrating wire to follow a single partially attached vortex in superfluid helium. In their rougher cell, pinning became more frequent as temperature rose; a smoother cell showed much less pinning. Varying the wire motion changed the observed decay, and the authors proposed excitation of Kelvin waves as a mechanism that helps a vortex unpin.", "scope": "Donev, Hough and Zieve used a vibrating wire to follow a single partially attached vortex in superfluid helium. In their rougher cell, pinning became more frequent as temperature rose; a smoother cell showed much less pinning. Varying the wire motion changed the observed decay, and the authors proposed excitation of Kelvin waves as a mechanism that helps a vortex unpin. The result concerns the two specific cells and stationary post-rotation measurements. Pinning was inferred from the circulation signal, with limited event counts; the Kelvin-wave mechanism is the authors’ interpretation, not an independently isolated causal test. At elevated temperature noise obscured Kelvin oscillations and some decay rates could not be measured accurately. The article proposes further frequency-controlled and surface-characterization experiments. Its printed free-core radius uses 1.3 × 10⁻⁸ Å, a questionable unit that is not silently corrected here. The exact journal version and raw data were not reviewed.", "evidence_summary": "The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. The result concerns the two specific cells and stationary post-rotation measurements. Pinning was inferred from the circulation signal, with limited event counts; the Kelvin-wave mechanism is the authors’ interpretation, not an independently isolated causal test. At elevated temperature noise obscured Kelvin oscillations and some decay rates could not be measured accurately. The article proposes further frequency-controlled and surface-characterization experiments. Its printed free-core radius uses 1.3 × 10⁻⁸ Å, a questionable unit that is not silently corrected here. The exact journal version and raw data were not reviewed.", "references": [ { "title": "Depinning of a superfluid vortex line by Kelvin waves", "url": "https://arxiv.org/pdf/cond-mat/0010240v2", "locator": "Original scoped contribution, statement/method and evidence limits; source-specific attribution retained." } ], "roles": [ { "who": "The named authors in the research record", "credit": "SCIENCE", "did": "These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. 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