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This is accomplished within an optical trap by sympathetic cooling of the fermionic isotope 6Li with evaporatively cooled bosonic 174Yb and, separately, fermionic 173Yb.Using cross-thermalization studies, we also measure the elastic s-wave scattering lengths of both Li-Yb combinations, |a6Li-174Yb| = 1.0\\pm0.2 nm and |a6Li-173Yb| = 0.9\\pm0.2 nm. The equality of these lengths is found to be consistent with mass-scaling analysis. The quantum degenerate mixtures of Li and Yb, as"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1104.4430","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-04-22T12:43:42Z","cross_cats_sorted":["cond-mat.quant-gas"],"title_canon_sha256":"5b33495783ae0b686ac987037e0c30f33036de422219db4dc9270673894caab7","abstract_canon_sha256":"adf184625715797566712a6f7350f79925ace7794e0b5751acc3d4848b9b4546"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:16.268789Z","signature_b64":"83Rgk/DKbiiXAjJ60WzSUoxiU0lBa8Cp5CA8Iyz2BL84sOkxjFGxHzhXgqOx+MQY9GCVMwUTc2O1fFxrpqnoBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d02bd7702f201d6db1960d98bc66657c705e795ab7c2e491753772d806123faf","last_reissued_at":"2026-05-18T02:02:16.267970Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:16.267970Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quantum degenerate mixtures of alkali and alkaline-earth-like atoms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas"],"primary_cat":"physics.atom-ph","authors_text":"Hideaki Hara, John M. Doyle, Yoshifumi Yamaoka, Yoshiro Takahashi, Yosuke Takasu","submitted_at":"2011-04-22T12:43:42Z","abstract_excerpt":"We realize simultaneous quantum degeneracy in mixtures consisting of the alkali and alkalineearth-like atoms Li and Yb. This is accomplished within an optical trap by sympathetic cooling of the fermionic isotope 6Li with evaporatively cooled bosonic 174Yb and, separately, fermionic 173Yb.Using cross-thermalization studies, we also measure the elastic s-wave scattering lengths of both Li-Yb combinations, |a6Li-174Yb| = 1.0\\pm0.2 nm and |a6Li-173Yb| = 0.9\\pm0.2 nm. The equality of these lengths is found to be consistent with mass-scaling analysis. 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