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The observed low-temperature exponential dependence indicates a s-wave gap. Fitting the low temperature data to BCS s-wave expression gives the zero temperature gap value $\\Delta (0)= (1.34 \\pm 0.07) k_B T_c$ which is significantly smaller than the BCS value of 1.76$k_B T_c$. In addition, the normalized superfluid density $\\rho(T)$ shows an unusually long suppression near $T_c$, and are best fit by a two-band s-wave model."},"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":"1206.2091","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-06-11T03:40:02Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"9a3a04f72bdec3a111822d0399bac5053013a4265e5bad4730e52f3a3001b170","abstract_canon_sha256":"3837e917d9fa776e736e55f2542a18fa9c14f6c94c9a10b9dbd2d998843c941c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:00.173474Z","signature_b64":"OZFN8/l+32hbFc9y6fdBuk2ZJy1kiLzo0kKv8k15+YbSe5+rCzLMY3CzphqWi17EXrnKJxAxXl0a24Z4JZMfCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"84a4d24ccd126697663b589e3f66ab2c5f0c97f6cbb57fead985d7aadb3743d2","last_reissued_at":"2026-05-18T01:57:00.173022Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:00.173022Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Penetration depth study of LaOs$_4$Sb$_{12}$: Multiband s-wave superconductivity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"C. 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