{"paper":{"title":"Destruction of chain-superconductivity in YBa_2Cu_4O_8 in a weak magnetic field","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"A. Carrington, A. Serafin, J.D. Fletcher, N.E. Hussey, S. Adachi","submitted_at":"2010-08-20T16:22:23Z","abstract_excerpt":"We report measurements of the temperature dependent components of the magnetic penetration depth {\\lambda}(T) in single crystal samples of YBa_2Cu_4O_8 using a radio frequency tunnel diode oscillator technique. We observe a downturn in {\\lambda}(T) at low temperatures for currents flowing along the b and c axes but not along the a axis. The downturn in {\\lambda}_b is suppressed by a small dc field of ~0.25 T. This and the zero field anisotropy of {\\lambda}(T) likely result from proximity induced superconducting on the CuO chains, however we also discuss the possibility that a significant part "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.3532","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}