{"paper":{"title":"Superconducting Penetration Depth Through a Van Hove Singularity: Sr$_2$RuO$_4$ Under Uniaxial Stress","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Anastasios Markou, Andrew P. Mackenzie, Clifford W. Hicks, Dmitry A. Sokolov, Edgar Abarca-Morales, Eli Mueller, Fabian Jerzembeck, Gwansuk Oh, Jorge O. Rodriguez, Kathryn A. Moler, Marisa Romanelli, Naoki Kikugawa, Vidya Madhavan, Yoshiteru Maeno, Yusuke Iguchi","submitted_at":"2023-12-08T16:00:05Z","abstract_excerpt":"In the unconventional superconductor Sr$_2$RuO$_4$, uniaxial stress along the $[100]$ direction tunes the Fermi level through a Van Hove singularity (VHS) in the density of states, causing a strong enhancement of the superconducting critical temperature $T_\\textrm{c}$. Here, we report measurements of the London penetration depth $\\lambda$ as this tuning is performed. We find that the zero-temperature superfluid density, here defined as $\\lambda(0)^{-2}$, increases by $\\sim$15%, with a peak that coincides with the peak in $T_\\textrm{c}$. We also find that the low temperature form of $\\lambda(T)"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.05130","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2312.05130/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}