{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:S2AJYLQLTE2FT4O7TGYVCGWAA5","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"a9a9b154fa13afa5d20f3d9e80c3929213cf1eaf50455faaf782404654d5b748","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-09-21T08:26:49Z","title_canon_sha256":"80b9110c4fadd73caa20f0dd97e824388e81b6ba45a110f4c4c6bc5b395fd01f"},"schema_version":"1.0","source":{"id":"1509.06455","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.06455","created_at":"2026-05-18T01:20:34Z"},{"alias_kind":"arxiv_version","alias_value":"1509.06455v1","created_at":"2026-05-18T01:20:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.06455","created_at":"2026-05-18T01:20:34Z"},{"alias_kind":"pith_short_12","alias_value":"S2AJYLQLTE2F","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"S2AJYLQLTE2FT4O7","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"S2AJYLQL","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:a285c4d35c38c8a0e0637a72e8ace9a44c8d39c564412779e036a01c61bf3b00","target":"graph","created_at":"2026-05-18T01:20:34Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Superconducting properties were studied on high quality superconductors $Ba_{x}(NH_{3})Fe_{2}Se_{2}$ ($T_{c}$ = 39 K) and $Sr_{x}(NH_{3})Fe_{2}Se_{2}$ ($T_{c}$ = 44 K) prepared by intercalating Ba/Sr atoms into tetragonal $\\beta$-FeSe by liquid ammonia. The elongated c-axis and almost unchanged a-axis of $Ba_{x}(NH_{3})Fe_{2}Se_{2}$, comparing with $\\beta$-FeSe, suggested an unchanged intra-$Fe_{2}Se_{2}$-layer structure and the $T_{c}$ enhancement is due to a 3D to 2D-like Fermi surface transformation. The superconducting coherent lengths $\\xi$(0), Ginzburg-Landau parameters $\\kappa$ and pene","authors_text":"Gu-Kuei Li, Ming-Cheng Yang, Shou-Ting Jian, Yu-Bo Li, Yung-Yuan Hsu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-09-21T08:26:49Z","title":"Two-gap superconducting properties of alkaline-earth intercalated $A_{x}(NH_{3})Fe_{2}Se_{2}$ (A = Ba or Sr)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.06455","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:673023f43aeddddb72cda4126c9ce0ff64252a00db4ef01e6da8274509ddb2d2","target":"record","created_at":"2026-05-18T01:20:34Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"a9a9b154fa13afa5d20f3d9e80c3929213cf1eaf50455faaf782404654d5b748","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-09-21T08:26:49Z","title_canon_sha256":"80b9110c4fadd73caa20f0dd97e824388e81b6ba45a110f4c4c6bc5b395fd01f"},"schema_version":"1.0","source":{"id":"1509.06455","kind":"arxiv","version":1}},"canonical_sha256":"96809c2e0b993459f1df99b1511ac00760274031dcf1610f2ec31eaba76bb2d8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"96809c2e0b993459f1df99b1511ac00760274031dcf1610f2ec31eaba76bb2d8","first_computed_at":"2026-05-18T01:20:34.086280Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:20:34.086280Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2wZ1Feg+x7J5uX6YAsUwliJ55HNo0B9LFFTkllQynQhQUtLuh7XABDZh+OSJbi5AxAPJ3+3JLTk91Ir7UuIaAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:20:34.086743Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.06455","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:673023f43aeddddb72cda4126c9ce0ff64252a00db4ef01e6da8274509ddb2d2","sha256:a285c4d35c38c8a0e0637a72e8ace9a44c8d39c564412779e036a01c61bf3b00"],"state_sha256":"410c152ef8513df7ae3ae19daaaf007ede071a59ee1bffb73680407f34bcaf2b"}