{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:W5U6ZE5ORH3V6EUAAQZ6LFDQGW","short_pith_number":"pith:W5U6ZE5O","canonical_record":{"source":{"id":"1905.07159","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-05-17T08:14:16Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"c585c80de11d278c7a0ccc2aea81f328c946dddff2286db9c113f7ae01ac7d8c","abstract_canon_sha256":"8cf6f2554bf4785d23c0345d22ee5d97a0284b6327949e006b0163cb567f28b4"},"schema_version":"1.0"},"canonical_sha256":"b769ec93ae89f75f12800433e594703597c9c4fe0c362a61b61c19d254fefe43","source":{"kind":"arxiv","id":"1905.07159","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.07159","created_at":"2026-05-17T23:40:48Z"},{"alias_kind":"arxiv_version","alias_value":"1905.07159v1","created_at":"2026-05-17T23:40:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.07159","created_at":"2026-05-17T23:40:48Z"},{"alias_kind":"pith_short_12","alias_value":"W5U6ZE5ORH3V","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"W5U6ZE5ORH3V6EUA","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"W5U6ZE5O","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:W5U6ZE5ORH3V6EUAAQZ6LFDQGW","target":"record","payload":{"canonical_record":{"source":{"id":"1905.07159","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-05-17T08:14:16Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"c585c80de11d278c7a0ccc2aea81f328c946dddff2286db9c113f7ae01ac7d8c","abstract_canon_sha256":"8cf6f2554bf4785d23c0345d22ee5d97a0284b6327949e006b0163cb567f28b4"},"schema_version":"1.0"},"canonical_sha256":"b769ec93ae89f75f12800433e594703597c9c4fe0c362a61b61c19d254fefe43","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:48.854338Z","signature_b64":"HIU1ZJrxJdd/6BtqbMlvunddejwhUWCNt3X76SwmoqL9/q3WbmU/WagdXAVDf0lp14o2M8IEGQCuBUcgicBKDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b769ec93ae89f75f12800433e594703597c9c4fe0c362a61b61c19d254fefe43","last_reissued_at":"2026-05-17T23:40:48.853675Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:48.853675Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.07159","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":"2026-05-17T23:40:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2Eq917wF3/lSbvDIB3sUvlk25Ldfu0Ep4TGJ9I6F9Dq71LuQACZXAZrHnJhidaKVG1IsJNCMbh6toxpl/S3pBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:20:18.694547Z"},"content_sha256":"3634723ad75d575acc8ea40015ab97f7885816c7d824b8e8127c9abb9c28b345","schema_version":"1.0","event_id":"sha256:3634723ad75d575acc8ea40015ab97f7885816c7d824b8e8127c9abb9c28b345"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:W5U6ZE5ORH3V6EUAAQZ6LFDQGW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Colossal infrared and terahertz magneto-optical activity in a two-dimensional Dirac material","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.str-el","authors_text":"Alexey B. Kuzmenko, Andre K. Geim, Ievgeniia O. Nedoliuk, Sheng Hu","submitted_at":"2019-05-17T08:14:16Z","abstract_excerpt":"When two-dimensional electron gases (2DEGs) are exposed to magnetic field, they resonantly absorb electromagnetic radiation via electronic transitions between Landau levels (LLs). In 2DEGs with a Dirac spectrum, such as graphene, theory predicts an exceptionally high infrared magneto-absorption, even at zero doping. However, the measured LL magneto-optical effects in graphene have been much weaker than expected because of imperfections in the samples available so far for such experiments. Here we measure magneto-transmission and Faraday rotation in high-mobility encapsulated monolayer graphene"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.07159","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":"2026-05-17T23:40:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c+W5KX9MQcsSt/WjNddVKcEzCh/BHfFrVOSPtNb7FfLeSmWKLHGQn/81FsmaFLqctf8qf+DUgym7zZKeOMHGCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:20:18.695229Z"},"content_sha256":"17082272eb9c8a0aa30fc257c463d915ebf85696c2778e00e0e63785ab54f0ed","schema_version":"1.0","event_id":"sha256:17082272eb9c8a0aa30fc257c463d915ebf85696c2778e00e0e63785ab54f0ed"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W5U6ZE5ORH3V6EUAAQZ6LFDQGW/bundle.json","state_url":"https://pith.science/pith/W5U6ZE5ORH3V6EUAAQZ6LFDQGW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W5U6ZE5ORH3V6EUAAQZ6LFDQGW/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":"2026-05-26T03:20:18Z","links":{"resolver":"https://pith.science/pith/W5U6ZE5ORH3V6EUAAQZ6LFDQGW","bundle":"https://pith.science/pith/W5U6ZE5ORH3V6EUAAQZ6LFDQGW/bundle.json","state":"https://pith.science/pith/W5U6ZE5ORH3V6EUAAQZ6LFDQGW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W5U6ZE5ORH3V6EUAAQZ6LFDQGW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:W5U6ZE5ORH3V6EUAAQZ6LFDQGW","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":"8cf6f2554bf4785d23c0345d22ee5d97a0284b6327949e006b0163cb567f28b4","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-05-17T08:14:16Z","title_canon_sha256":"c585c80de11d278c7a0ccc2aea81f328c946dddff2286db9c113f7ae01ac7d8c"},"schema_version":"1.0","source":{"id":"1905.07159","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.07159","created_at":"2026-05-17T23:40:48Z"},{"alias_kind":"arxiv_version","alias_value":"1905.07159v1","created_at":"2026-05-17T23:40:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.07159","created_at":"2026-05-17T23:40:48Z"},{"alias_kind":"pith_short_12","alias_value":"W5U6ZE5ORH3V","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"W5U6ZE5ORH3V6EUA","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"W5U6ZE5O","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:17082272eb9c8a0aa30fc257c463d915ebf85696c2778e00e0e63785ab54f0ed","target":"graph","created_at":"2026-05-17T23:40:48Z","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":"When two-dimensional electron gases (2DEGs) are exposed to magnetic field, they resonantly absorb electromagnetic radiation via electronic transitions between Landau levels (LLs). In 2DEGs with a Dirac spectrum, such as graphene, theory predicts an exceptionally high infrared magneto-absorption, even at zero doping. However, the measured LL magneto-optical effects in graphene have been much weaker than expected because of imperfections in the samples available so far for such experiments. Here we measure magneto-transmission and Faraday rotation in high-mobility encapsulated monolayer graphene","authors_text":"Alexey B. Kuzmenko, Andre K. Geim, Ievgeniia O. Nedoliuk, Sheng Hu","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-05-17T08:14:16Z","title":"Colossal infrared and terahertz magneto-optical activity in a two-dimensional Dirac material"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.07159","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":"sha256:3634723ad75d575acc8ea40015ab97f7885816c7d824b8e8127c9abb9c28b345","target":"record","created_at":"2026-05-17T23:40:48Z","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":"8cf6f2554bf4785d23c0345d22ee5d97a0284b6327949e006b0163cb567f28b4","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-05-17T08:14:16Z","title_canon_sha256":"c585c80de11d278c7a0ccc2aea81f328c946dddff2286db9c113f7ae01ac7d8c"},"schema_version":"1.0","source":{"id":"1905.07159","kind":"arxiv","version":1}},"canonical_sha256":"b769ec93ae89f75f12800433e594703597c9c4fe0c362a61b61c19d254fefe43","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b769ec93ae89f75f12800433e594703597c9c4fe0c362a61b61c19d254fefe43","first_computed_at":"2026-05-17T23:40:48.853675Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:48.853675Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HIU1ZJrxJdd/6BtqbMlvunddejwhUWCNt3X76SwmoqL9/q3WbmU/WagdXAVDf0lp14o2M8IEGQCuBUcgicBKDg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:48.854338Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.07159","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3634723ad75d575acc8ea40015ab97f7885816c7d824b8e8127c9abb9c28b345","sha256:17082272eb9c8a0aa30fc257c463d915ebf85696c2778e00e0e63785ab54f0ed"],"state_sha256":"1f85da5939e926c6073d605fb8815ac6ebbf327b2bed13a50c967dace9403e35"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5YVUwqb3A5aCE5EkDInPYj+LKBi52zVrGTcoNg3+mX/+QeucZfkFVzEjhRcmRo8cEU5zFRQDOJIR8sLJrsxjCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T03:20:18.699100Z","bundle_sha256":"4bc0b5c40945efeaebbc3305878fa58c20455213052364450ffef1244ed3e08c"}}