{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:GX3TIAJJIY4FDZFI3SBHTAOGUP","short_pith_number":"pith:GX3TIAJJ","canonical_record":{"source":{"id":"1408.0358","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-08-02T10:29:40Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"ed34547da3ec6d070edfe38f36b50858839ca70e98f5394641960c4d2dfa3601","abstract_canon_sha256":"b27b6fb03bf11b12f5e8d14c46108bd118dce8abd6e8e49c2401455e379014f6"},"schema_version":"1.0"},"canonical_sha256":"35f7340129463851e4a8dc827981c6a3e93fec2070ec67c350e74fcc8e3a2a35","source":{"kind":"arxiv","id":"1408.0358","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.0358","created_at":"2026-05-18T01:16:37Z"},{"alias_kind":"arxiv_version","alias_value":"1408.0358v1","created_at":"2026-05-18T01:16:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.0358","created_at":"2026-05-18T01:16:37Z"},{"alias_kind":"pith_short_12","alias_value":"GX3TIAJJIY4F","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"GX3TIAJJIY4FDZFI","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"GX3TIAJJ","created_at":"2026-05-18T12:28:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:GX3TIAJJIY4FDZFI3SBHTAOGUP","target":"record","payload":{"canonical_record":{"source":{"id":"1408.0358","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-08-02T10:29:40Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"ed34547da3ec6d070edfe38f36b50858839ca70e98f5394641960c4d2dfa3601","abstract_canon_sha256":"b27b6fb03bf11b12f5e8d14c46108bd118dce8abd6e8e49c2401455e379014f6"},"schema_version":"1.0"},"canonical_sha256":"35f7340129463851e4a8dc827981c6a3e93fec2070ec67c350e74fcc8e3a2a35","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:37.706558Z","signature_b64":"v76TbGy/TjjAIo8ObTZw7GgSTeSycBcFN+Y3AktwdO55nh4/FM1t64sKidsD9FKmdeZW+bu8AewhrMyKHC4+AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"35f7340129463851e4a8dc827981c6a3e93fec2070ec67c350e74fcc8e3a2a35","last_reissued_at":"2026-05-18T01:16:37.705831Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:37.705831Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1408.0358","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":"2026-05-18T01:16:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O+0rgQWHFc/86KNfwUm5Hbtv1Ykw4tMrCd2PiYDBMf4HXpLJ1TZqIkanZMFCwFanjLmUtQtvAsBsplHJXyo9Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T01:19:16.649917Z"},"content_sha256":"58d7b7826b81ac8e5065cee5882af708d550727abcd772039b21a7939901e33f","schema_version":"1.0","event_id":"sha256:58d7b7826b81ac8e5065cee5882af708d550727abcd772039b21a7939901e33f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:GX3TIAJJIY4FDZFI3SBHTAOGUP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Graphene, a material for high temperature devices; intrinsic carrier density, carrier drift velocity, and lattice energy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Kuijuan Jin, Li Wang, Wenzhong Wang, Yan Yin, Zengguang Cheng","submitted_at":"2014-08-02T10:29:40Z","abstract_excerpt":"Heat has always been a killing matter for traditional semiconductor machines. The underlining physical reason is that the intrinsic carrier density of a device made from a traditional semiconductor material increases very fast with a rising temperature. Once reaching a temperature, the density surpasses the chemical doping or gating effect, any p-n junction or transistor made from the semiconductor will fail to function. Here, we measure the intrinsic Fermi level (|E_F|=2.93k_B*T) or intrinsic carrier density (n_in=3.87*10^6 cm^-2 K^-2*T^2), carrier drift velocity, and G mode phonon energy of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.0358","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":"2026-05-18T01:16:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gNHGFAjYyufeHg49KZqZUipC2tVGi0M1F9UdfAWG6q9WHdxxY2OfPoj/zRQh77gPwW/kY2BfMwXEa2kb5fRqBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T01:19:16.650575Z"},"content_sha256":"689b75fe66db72cb3fafcc0ea6ca488aeafa0b395d8ccbf7e8a384b08550b123","schema_version":"1.0","event_id":"sha256:689b75fe66db72cb3fafcc0ea6ca488aeafa0b395d8ccbf7e8a384b08550b123"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GX3TIAJJIY4FDZFI3SBHTAOGUP/bundle.json","state_url":"https://pith.science/pith/GX3TIAJJIY4FDZFI3SBHTAOGUP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GX3TIAJJIY4FDZFI3SBHTAOGUP/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":"2026-05-30T01:19:16Z","links":{"resolver":"https://pith.science/pith/GX3TIAJJIY4FDZFI3SBHTAOGUP","bundle":"https://pith.science/pith/GX3TIAJJIY4FDZFI3SBHTAOGUP/bundle.json","state":"https://pith.science/pith/GX3TIAJJIY4FDZFI3SBHTAOGUP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GX3TIAJJIY4FDZFI3SBHTAOGUP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:GX3TIAJJIY4FDZFI3SBHTAOGUP","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":"b27b6fb03bf11b12f5e8d14c46108bd118dce8abd6e8e49c2401455e379014f6","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-08-02T10:29:40Z","title_canon_sha256":"ed34547da3ec6d070edfe38f36b50858839ca70e98f5394641960c4d2dfa3601"},"schema_version":"1.0","source":{"id":"1408.0358","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.0358","created_at":"2026-05-18T01:16:37Z"},{"alias_kind":"arxiv_version","alias_value":"1408.0358v1","created_at":"2026-05-18T01:16:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.0358","created_at":"2026-05-18T01:16:37Z"},{"alias_kind":"pith_short_12","alias_value":"GX3TIAJJIY4F","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"GX3TIAJJIY4FDZFI","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"GX3TIAJJ","created_at":"2026-05-18T12:28:30Z"}],"graph_snapshots":[{"event_id":"sha256:689b75fe66db72cb3fafcc0ea6ca488aeafa0b395d8ccbf7e8a384b08550b123","target":"graph","created_at":"2026-05-18T01:16:37Z","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":"Heat has always been a killing matter for traditional semiconductor machines. The underlining physical reason is that the intrinsic carrier density of a device made from a traditional semiconductor material increases very fast with a rising temperature. Once reaching a temperature, the density surpasses the chemical doping or gating effect, any p-n junction or transistor made from the semiconductor will fail to function. Here, we measure the intrinsic Fermi level (|E_F|=2.93k_B*T) or intrinsic carrier density (n_in=3.87*10^6 cm^-2 K^-2*T^2), carrier drift velocity, and G mode phonon energy of ","authors_text":"Kuijuan Jin, Li Wang, Wenzhong Wang, Yan Yin, Zengguang Cheng","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-08-02T10:29:40Z","title":"Graphene, a material for high temperature devices; intrinsic carrier density, carrier drift velocity, and lattice energy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.0358","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":"sha256:58d7b7826b81ac8e5065cee5882af708d550727abcd772039b21a7939901e33f","target":"record","created_at":"2026-05-18T01:16:37Z","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":"b27b6fb03bf11b12f5e8d14c46108bd118dce8abd6e8e49c2401455e379014f6","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-08-02T10:29:40Z","title_canon_sha256":"ed34547da3ec6d070edfe38f36b50858839ca70e98f5394641960c4d2dfa3601"},"schema_version":"1.0","source":{"id":"1408.0358","kind":"arxiv","version":1}},"canonical_sha256":"35f7340129463851e4a8dc827981c6a3e93fec2070ec67c350e74fcc8e3a2a35","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"35f7340129463851e4a8dc827981c6a3e93fec2070ec67c350e74fcc8e3a2a35","first_computed_at":"2026-05-18T01:16:37.705831Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:37.705831Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"v76TbGy/TjjAIo8ObTZw7GgSTeSycBcFN+Y3AktwdO55nh4/FM1t64sKidsD9FKmdeZW+bu8AewhrMyKHC4+AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:37.706558Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.0358","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:58d7b7826b81ac8e5065cee5882af708d550727abcd772039b21a7939901e33f","sha256:689b75fe66db72cb3fafcc0ea6ca488aeafa0b395d8ccbf7e8a384b08550b123"],"state_sha256":"dfc3d22347caa61dc162551209642ce32c4b671d808f454d628ae7dcba73254a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y6X6RiyroTfDNIzpsATjOBZD4vp3fhVyaF9uvN31eMEGsbTL5FGuYtS+4jmy5C0QjQ5BjNhgaqXhs/cb67LMDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T01:19:16.653590Z","bundle_sha256":"dd9136037169916a0bd13b6d3bfa1fc68560d741f11055111b8f21e2297febb3"}}