{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:JSR7KUXQH3J2V3DFV2O76T7CQZ","short_pith_number":"pith:JSR7KUXQ","canonical_record":{"source":{"id":"1412.1371","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-12-03T15:43:10Z","cross_cats_sorted":[],"title_canon_sha256":"430936ff0f98fba2fc99094c784ce2c015b26c5a10009098f421a767dac27169","abstract_canon_sha256":"38ca7c68600bf65904df42a6a79e5fcdb91aa230988c472bac8d97f9749b8f91"},"schema_version":"1.0"},"canonical_sha256":"4ca3f552f03ed3aaec65ae9dff4fe2866e4d8986dead1e5e02fc10b30a6480a8","source":{"kind":"arxiv","id":"1412.1371","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.1371","created_at":"2026-05-18T02:27:50Z"},{"alias_kind":"arxiv_version","alias_value":"1412.1371v2","created_at":"2026-05-18T02:27:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.1371","created_at":"2026-05-18T02:27:50Z"},{"alias_kind":"pith_short_12","alias_value":"JSR7KUXQH3J2","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"JSR7KUXQH3J2V3DF","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"JSR7KUXQ","created_at":"2026-05-18T12:28:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:JSR7KUXQH3J2V3DFV2O76T7CQZ","target":"record","payload":{"canonical_record":{"source":{"id":"1412.1371","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-12-03T15:43:10Z","cross_cats_sorted":[],"title_canon_sha256":"430936ff0f98fba2fc99094c784ce2c015b26c5a10009098f421a767dac27169","abstract_canon_sha256":"38ca7c68600bf65904df42a6a79e5fcdb91aa230988c472bac8d97f9749b8f91"},"schema_version":"1.0"},"canonical_sha256":"4ca3f552f03ed3aaec65ae9dff4fe2866e4d8986dead1e5e02fc10b30a6480a8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:27:50.125414Z","signature_b64":"B538myeW/NR0hVRXDth2XxKeb1MbxUULnXIkEj6GUPd5BU/mEPrPdIFyTd9zObk8OS6PBBKAp5SIap5Tmsk4Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4ca3f552f03ed3aaec65ae9dff4fe2866e4d8986dead1e5e02fc10b30a6480a8","last_reissued_at":"2026-05-18T02:27:50.124989Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:27:50.124989Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1412.1371","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:27:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A5n2mG21yvI3gR/LttY3CjaVA1rEUuTj37m3nLOKeBZOqDCqCLrB7+0e/gqhxJRU3AxXHHgJpUk5knJ5UwoACA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T10:54:20.612487Z"},"content_sha256":"8da264765d521522055779a8fc2f48d8e178d462fc777149878d8528ee9c5e14","schema_version":"1.0","event_id":"sha256:8da264765d521522055779a8fc2f48d8e178d462fc777149878d8528ee9c5e14"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:JSR7KUXQH3J2V3DFV2O76T7CQZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The photoresponse of a two-dimensional electron gas at the second harmonic of the cyclotron resonance","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"J. {\\L}usakowski, J. Wr\\'obel, M. Bia{\\l}ek, M. Czapkiewicz, V. Umansky","submitted_at":"2014-12-03T15:43:10Z","abstract_excerpt":"Terahertz spectroscopy experiments at magnetic fields and low temperatures were carried out on samples of different gate shapes processed on a high electron mobility GaAs/AlGaAs heterostructure. For a given radiation frequency, multiple magnetoplasmon resonances were observed with a dispersion relation described within a local approximation of the magnetoconductivity tensor. The second harmonic of the cyclotron resonance was observed and its appearance was interpreted as resulting from a high frequency, inhomogeneous electromagnetic field on the border of a two-dimensional electron gas with a "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.1371","kind":"arxiv","version":2},"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":"2026-05-18T02:27:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F1A1JC0y1OqLL1/5oac2KsQrXttgcFuEoFJdvoejnNjOUe9NafrNmRLfJsLfmUtv6XkOfv6e5Id6bRsDOg0pCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T10:54:20.613148Z"},"content_sha256":"3954ce0111e2de3eecd1d808b378501d865e01d9c4fb11e334e9ff56b60fe8c3","schema_version":"1.0","event_id":"sha256:3954ce0111e2de3eecd1d808b378501d865e01d9c4fb11e334e9ff56b60fe8c3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JSR7KUXQH3J2V3DFV2O76T7CQZ/bundle.json","state_url":"https://pith.science/pith/JSR7KUXQH3J2V3DFV2O76T7CQZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JSR7KUXQH3J2V3DFV2O76T7CQZ/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":"2026-05-31T10:54:20Z","links":{"resolver":"https://pith.science/pith/JSR7KUXQH3J2V3DFV2O76T7CQZ","bundle":"https://pith.science/pith/JSR7KUXQH3J2V3DFV2O76T7CQZ/bundle.json","state":"https://pith.science/pith/JSR7KUXQH3J2V3DFV2O76T7CQZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JSR7KUXQH3J2V3DFV2O76T7CQZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:JSR7KUXQH3J2V3DFV2O76T7CQZ","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":"38ca7c68600bf65904df42a6a79e5fcdb91aa230988c472bac8d97f9749b8f91","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-12-03T15:43:10Z","title_canon_sha256":"430936ff0f98fba2fc99094c784ce2c015b26c5a10009098f421a767dac27169"},"schema_version":"1.0","source":{"id":"1412.1371","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.1371","created_at":"2026-05-18T02:27:50Z"},{"alias_kind":"arxiv_version","alias_value":"1412.1371v2","created_at":"2026-05-18T02:27:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.1371","created_at":"2026-05-18T02:27:50Z"},{"alias_kind":"pith_short_12","alias_value":"JSR7KUXQH3J2","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"JSR7KUXQH3J2V3DF","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"JSR7KUXQ","created_at":"2026-05-18T12:28:35Z"}],"graph_snapshots":[{"event_id":"sha256:3954ce0111e2de3eecd1d808b378501d865e01d9c4fb11e334e9ff56b60fe8c3","target":"graph","created_at":"2026-05-18T02:27:50Z","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":"Terahertz spectroscopy experiments at magnetic fields and low temperatures were carried out on samples of different gate shapes processed on a high electron mobility GaAs/AlGaAs heterostructure. For a given radiation frequency, multiple magnetoplasmon resonances were observed with a dispersion relation described within a local approximation of the magnetoconductivity tensor. The second harmonic of the cyclotron resonance was observed and its appearance was interpreted as resulting from a high frequency, inhomogeneous electromagnetic field on the border of a two-dimensional electron gas with a ","authors_text":"J. {\\L}usakowski, J. Wr\\'obel, M. Bia{\\l}ek, M. Czapkiewicz, V. Umansky","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-12-03T15:43:10Z","title":"The photoresponse of a two-dimensional electron gas at the second harmonic of the cyclotron resonance"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.1371","kind":"arxiv","version":2},"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":"sha256:8da264765d521522055779a8fc2f48d8e178d462fc777149878d8528ee9c5e14","target":"record","created_at":"2026-05-18T02:27:50Z","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":"38ca7c68600bf65904df42a6a79e5fcdb91aa230988c472bac8d97f9749b8f91","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-12-03T15:43:10Z","title_canon_sha256":"430936ff0f98fba2fc99094c784ce2c015b26c5a10009098f421a767dac27169"},"schema_version":"1.0","source":{"id":"1412.1371","kind":"arxiv","version":2}},"canonical_sha256":"4ca3f552f03ed3aaec65ae9dff4fe2866e4d8986dead1e5e02fc10b30a6480a8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4ca3f552f03ed3aaec65ae9dff4fe2866e4d8986dead1e5e02fc10b30a6480a8","first_computed_at":"2026-05-18T02:27:50.124989Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:27:50.124989Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"B538myeW/NR0hVRXDth2XxKeb1MbxUULnXIkEj6GUPd5BU/mEPrPdIFyTd9zObk8OS6PBBKAp5SIap5Tmsk4Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:27:50.125414Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.1371","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8da264765d521522055779a8fc2f48d8e178d462fc777149878d8528ee9c5e14","sha256:3954ce0111e2de3eecd1d808b378501d865e01d9c4fb11e334e9ff56b60fe8c3"],"state_sha256":"a15dce12a378b03b446c253a82c9fa7f903371be026899cf80cb8d72fa6ef270"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7tB46QzdScydk/xAyvPFQhsCgTvqCTn9N7VTZYx7JjGvcouMSu7lB1xaFF9LjS91GKML22gj5D+mBXDwiPtzBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T10:54:20.616781Z","bundle_sha256":"e13132ba89ff6277683b91932e949bf4a10ede80385ad9037d37ae4f1b7bd6cb"}}