{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:7NV633C2CELE2Z5WQZSR7ILH4R","short_pith_number":"pith:7NV633C2","schema_version":"1.0","canonical_sha256":"fb6bedec5a11164d67b686651fa167e4686643fe1abfb4912756b58f103869aa","source":{"kind":"arxiv","id":"1110.5458","version":1},"attestation_state":"computed","paper":{"title":"Superconductivity in alkali-earth metals doped phenanthrene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"J. J. Ying (1), R. H. Liu (1), X. F. Wang (1), X. G. Luo (1), X. H. Chen (1), Y. J. Yan (1), Z. Gui (2)","submitted_at":"2011-10-25T10:50:49Z","abstract_excerpt":"We discover superconductivity in alkali-earth metals doped phenanthrene. The superconducting critical temperatures \\emph{T}$_c$ are 5.6 K and 5.4 K for Sr$_{1.5}$phenanthrene and Ba$_{1.5}$phenanthrene, respectively. The shielding fraction of Ba$_{1.5}$phenanthrene exceeds 65%. The Raman spectra show 8 cm$^{-1}$/electron and 7 cm$^{-1}$/electron downshifts for the mode at 1441 cm$^{-1}$ due to the charge transfer to organic molecules from the dopants of Ba and Sr. Similar behavior has been observed in A$_3$phenanthrene and A$_3$C$_{60}$(A = K and Rb). The positive pressure effect in Sr$_{1.5}$"},"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":"1110.5458","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2011-10-25T10:50:49Z","cross_cats_sorted":[],"title_canon_sha256":"cf11bd8e2156c8a5a6b30f90a30cce6f6f7a7d8d7b4f2e3b63ad04bece96128c","abstract_canon_sha256":"eadb59c0cfc96e823763af4b57cac92efded4c9ddf65045425f8e66d2fd25ab2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:53:43.701908Z","signature_b64":"VOPnqBxaNboGHjKdBJDlftE/Y0qWJY+c78dlBXMwT6/oIpnbd1z82rO6W8WFoB2AqBuARFjKMLuA73LiZ+Y4CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fb6bedec5a11164d67b686651fa167e4686643fe1abfb4912756b58f103869aa","last_reissued_at":"2026-05-18T03:53:43.701356Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:53:43.701356Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Superconductivity in alkali-earth metals doped phenanthrene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"J. J. Ying (1), R. H. Liu (1), X. F. Wang (1), X. G. Luo (1), X. H. Chen (1), Y. J. Yan (1), Z. Gui (2)","submitted_at":"2011-10-25T10:50:49Z","abstract_excerpt":"We discover superconductivity in alkali-earth metals doped phenanthrene. The superconducting critical temperatures \\emph{T}$_c$ are 5.6 K and 5.4 K for Sr$_{1.5}$phenanthrene and Ba$_{1.5}$phenanthrene, respectively. The shielding fraction of Ba$_{1.5}$phenanthrene exceeds 65%. The Raman spectra show 8 cm$^{-1}$/electron and 7 cm$^{-1}$/electron downshifts for the mode at 1441 cm$^{-1}$ due to the charge transfer to organic molecules from the dopants of Ba and Sr. Similar behavior has been observed in A$_3$phenanthrene and A$_3$C$_{60}$(A = K and Rb). 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