{"paper":{"title":"Low-temperature behavior of transmission phase shift across a Kondo correlated quantum dot","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. Alex, A. D. Wieck, A. Ludwig, C. B\\\"auerle, J. von Delft, M. Yamamoto, S. Takada, S. Tarucha","submitted_at":"2016-08-20T13:42:27Z","abstract_excerpt":"We study the transmission phase shift across a Kondo correlated quantum dot in a GaAs heterostructure at temperatures below the Kondo temperature ($T < T_{\\rm K}$), where the phase shift is expected to show a plateau at $\\pi/2$ for an ideal Kondo singlet ground state. Our device is tuned such that the ratio $\\Gamma/U$ of level width $\\Gamma$ to charging energy $U$ is quite large ($\\lesssim 0.5$ rather than $\\ll 1$). This situation is commonly used in GaAs quantum dots to ensure Kondo temperatures large enough ($\\simeq 100$ mK here) to be experimentally accessible; however it also implies that "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.05823","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"}