{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:55FS6REP7HM5IRGIYAAQNCI7LO","short_pith_number":"pith:55FS6REP","canonical_record":{"source":{"id":"1604.07516","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-26T04:43:20Z","cross_cats_sorted":[],"title_canon_sha256":"4b6bda19432c2e22806e63e8ec3f41c84151b6b7e8381c3e95733b0e56f40a9d","abstract_canon_sha256":"845de10b366b77604c6e24447a9bf81944cc9b040f35cbfbcf658c9dde3d782a"},"schema_version":"1.0"},"canonical_sha256":"ef4b2f448ff9d9d444c8c00106891f5ba539f1dc9395cf5319c4b0dbfedc3f1b","source":{"kind":"arxiv","id":"1604.07516","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.07516","created_at":"2026-05-18T01:13:11Z"},{"alias_kind":"arxiv_version","alias_value":"1604.07516v1","created_at":"2026-05-18T01:13:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.07516","created_at":"2026-05-18T01:13:11Z"},{"alias_kind":"pith_short_12","alias_value":"55FS6REP7HM5","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"55FS6REP7HM5IRGI","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"55FS6REP","created_at":"2026-05-18T12:29:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:55FS6REP7HM5IRGIYAAQNCI7LO","target":"record","payload":{"canonical_record":{"source":{"id":"1604.07516","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-26T04:43:20Z","cross_cats_sorted":[],"title_canon_sha256":"4b6bda19432c2e22806e63e8ec3f41c84151b6b7e8381c3e95733b0e56f40a9d","abstract_canon_sha256":"845de10b366b77604c6e24447a9bf81944cc9b040f35cbfbcf658c9dde3d782a"},"schema_version":"1.0"},"canonical_sha256":"ef4b2f448ff9d9d444c8c00106891f5ba539f1dc9395cf5319c4b0dbfedc3f1b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:13:11.030965Z","signature_b64":"Aoh5itHG0p8b3TQELnlojjzKK23ZPfKS4QywwfrJwzU62Jgo/gYXoBv/Fh69ZxThQHzKGbbv+w8kLY3EMmc1CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ef4b2f448ff9d9d444c8c00106891f5ba539f1dc9395cf5319c4b0dbfedc3f1b","last_reissued_at":"2026-05-18T01:13:11.030627Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:13:11.030627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.07516","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:13:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ju64ZyzuPVAg9yCXc6lEtsnr5fP4p4KJNzJxPT5BA5R4hf5lFCDUDJI8zf3AVVfmqq4HQBDUmIANB0INmK/XBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T20:55:09.811044Z"},"content_sha256":"2ed28beada110f4bad887122e6f9a65291a6b37a5ad57803f18d1c20c20746f3","schema_version":"1.0","event_id":"sha256:2ed28beada110f4bad887122e6f9a65291a6b37a5ad57803f18d1c20c20746f3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:55FS6REP7HM5IRGIYAAQNCI7LO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nearly Free Electron States in MXenes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Ahmad Ranjbar, Mahdi Ghorbani-Asl, Masao Arai, Mohammad Khazaei, Seiji Yunoki, Taizo Sasaki, Yunye Liang","submitted_at":"2016-04-26T04:43:20Z","abstract_excerpt":"Using a set of first-principles calculations, we studied the electronic structures of two-dimensional transition metal carbides and nitrides, so called MXenes, functionalized with F, O, and OH. Our projected band structures and electron localization function analyses reveal the existence of nearly free electron (NFE) states in variety of MXenes. The NFE states are spatially located just outside the atomic structure of MXenes and are extended parallel to the surfaces. Moreover, we found that the OH-terminated MXenes offer the NFE states energetically close to the Fermi level. In particular, the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.07516","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:13:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yTuqKzni1TQwfiZQnFSeQtW35sIf+tfVN7IIn10MhpyegPls3NalZTCM7Xeo7oPVb3SOUkaxqBvca7ucQtdSBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T20:55:09.811709Z"},"content_sha256":"035e4a25d444c98d0cdc8187558b2d2275453d50c229097013c90fc9ee01db88","schema_version":"1.0","event_id":"sha256:035e4a25d444c98d0cdc8187558b2d2275453d50c229097013c90fc9ee01db88"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/55FS6REP7HM5IRGIYAAQNCI7LO/bundle.json","state_url":"https://pith.science/pith/55FS6REP7HM5IRGIYAAQNCI7LO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/55FS6REP7HM5IRGIYAAQNCI7LO/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-30T20:55:09Z","links":{"resolver":"https://pith.science/pith/55FS6REP7HM5IRGIYAAQNCI7LO","bundle":"https://pith.science/pith/55FS6REP7HM5IRGIYAAQNCI7LO/bundle.json","state":"https://pith.science/pith/55FS6REP7HM5IRGIYAAQNCI7LO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/55FS6REP7HM5IRGIYAAQNCI7LO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:55FS6REP7HM5IRGIYAAQNCI7LO","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":"845de10b366b77604c6e24447a9bf81944cc9b040f35cbfbcf658c9dde3d782a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-26T04:43:20Z","title_canon_sha256":"4b6bda19432c2e22806e63e8ec3f41c84151b6b7e8381c3e95733b0e56f40a9d"},"schema_version":"1.0","source":{"id":"1604.07516","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.07516","created_at":"2026-05-18T01:13:11Z"},{"alias_kind":"arxiv_version","alias_value":"1604.07516v1","created_at":"2026-05-18T01:13:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.07516","created_at":"2026-05-18T01:13:11Z"},{"alias_kind":"pith_short_12","alias_value":"55FS6REP7HM5","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"55FS6REP7HM5IRGI","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"55FS6REP","created_at":"2026-05-18T12:29:58Z"}],"graph_snapshots":[{"event_id":"sha256:035e4a25d444c98d0cdc8187558b2d2275453d50c229097013c90fc9ee01db88","target":"graph","created_at":"2026-05-18T01:13:11Z","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":"Using a set of first-principles calculations, we studied the electronic structures of two-dimensional transition metal carbides and nitrides, so called MXenes, functionalized with F, O, and OH. Our projected band structures and electron localization function analyses reveal the existence of nearly free electron (NFE) states in variety of MXenes. The NFE states are spatially located just outside the atomic structure of MXenes and are extended parallel to the surfaces. Moreover, we found that the OH-terminated MXenes offer the NFE states energetically close to the Fermi level. In particular, the","authors_text":"Ahmad Ranjbar, Mahdi Ghorbani-Asl, Masao Arai, Mohammad Khazaei, Seiji Yunoki, Taizo Sasaki, Yunye Liang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-26T04:43:20Z","title":"Nearly Free Electron States in MXenes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.07516","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":"sha256:2ed28beada110f4bad887122e6f9a65291a6b37a5ad57803f18d1c20c20746f3","target":"record","created_at":"2026-05-18T01:13:11Z","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":"845de10b366b77604c6e24447a9bf81944cc9b040f35cbfbcf658c9dde3d782a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-26T04:43:20Z","title_canon_sha256":"4b6bda19432c2e22806e63e8ec3f41c84151b6b7e8381c3e95733b0e56f40a9d"},"schema_version":"1.0","source":{"id":"1604.07516","kind":"arxiv","version":1}},"canonical_sha256":"ef4b2f448ff9d9d444c8c00106891f5ba539f1dc9395cf5319c4b0dbfedc3f1b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ef4b2f448ff9d9d444c8c00106891f5ba539f1dc9395cf5319c4b0dbfedc3f1b","first_computed_at":"2026-05-18T01:13:11.030627Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:13:11.030627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Aoh5itHG0p8b3TQELnlojjzKK23ZPfKS4QywwfrJwzU62Jgo/gYXoBv/Fh69ZxThQHzKGbbv+w8kLY3EMmc1CA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:13:11.030965Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.07516","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2ed28beada110f4bad887122e6f9a65291a6b37a5ad57803f18d1c20c20746f3","sha256:035e4a25d444c98d0cdc8187558b2d2275453d50c229097013c90fc9ee01db88"],"state_sha256":"0bc82c04c4ae417ed5d750e47c01e27fc2ee55b1822cec43cfaafe0c3f05dec9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vsZGcxrH+nxKTqhGyqpVyczvxdPXgOFvkq2NvzE9tIC13qy7QDKodeW8LiDQ/EXR5rDzUPDjCXCtOg95AXfxDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T20:55:09.815289Z","bundle_sha256":"11c93d9a6929c0b824f3cc481779a59c7ba4095da423ddcb74e33d4809aeae25"}}