{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:NGU5J73EP35IAXFLUMHS7BUG7E","short_pith_number":"pith:NGU5J73E","canonical_record":{"source":{"id":"2104.07450","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-04-13T11:39:52Z","cross_cats_sorted":[],"title_canon_sha256":"e76c820457359700c558fb60d0f254451bf62c06e274fe63d0dc211a5f3bb194","abstract_canon_sha256":"8cdac64017ebce14f1f8c30a59853e930056e30f12110a371837432916efaa42"},"schema_version":"1.0"},"canonical_sha256":"69a9d4ff647efa805caba30f2f8686f91da9984ecd2d9da3c7e96b12926c4c7f","source":{"kind":"arxiv","id":"2104.07450","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.07450","created_at":"2026-07-05T03:03:08Z"},{"alias_kind":"arxiv_version","alias_value":"2104.07450v3","created_at":"2026-07-05T03:03:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.07450","created_at":"2026-07-05T03:03:08Z"},{"alias_kind":"pith_short_12","alias_value":"NGU5J73EP35I","created_at":"2026-07-05T03:03:08Z"},{"alias_kind":"pith_short_16","alias_value":"NGU5J73EP35IAXFL","created_at":"2026-07-05T03:03:08Z"},{"alias_kind":"pith_short_8","alias_value":"NGU5J73E","created_at":"2026-07-05T03:03:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:NGU5J73EP35IAXFLUMHS7BUG7E","target":"record","payload":{"canonical_record":{"source":{"id":"2104.07450","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-04-13T11:39:52Z","cross_cats_sorted":[],"title_canon_sha256":"e76c820457359700c558fb60d0f254451bf62c06e274fe63d0dc211a5f3bb194","abstract_canon_sha256":"8cdac64017ebce14f1f8c30a59853e930056e30f12110a371837432916efaa42"},"schema_version":"1.0"},"canonical_sha256":"69a9d4ff647efa805caba30f2f8686f91da9984ecd2d9da3c7e96b12926c4c7f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:03:08.306874Z","signature_b64":"/5/ZGkCIETmKHglfYijtAclWkobvAzEADE9GmUUc+sJz7RgrTHitQLvJPM3Edfp0x1qrBi92x5NMitg9luX4Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"69a9d4ff647efa805caba30f2f8686f91da9984ecd2d9da3c7e96b12926c4c7f","last_reissued_at":"2026-07-05T03:03:08.306461Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:03:08.306461Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2104.07450","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:03:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RZe5WXtQtYI3h6jzKMnG97OYCtWEagQw3DxqW2NjCqSNej+bznYkIZHWJOTbxfKwglp9dz72olbh5gyyOQTdDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-12T19:41:46.366419Z"},"content_sha256":"bfc7f6e84fb36356807c2c9ae3fee2f995d8b556dde2b1d48d323d69c930280f","schema_version":"1.0","event_id":"sha256:bfc7f6e84fb36356807c2c9ae3fee2f995d8b556dde2b1d48d323d69c930280f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:NGU5J73EP35IAXFLUMHS7BUG7E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Oblique and asymmetric Klein tunneling across smooth NP junctions or NPN junctions in 8-Pmmn borophene","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Jia-Ji Zhu, Jian Li, Shu-Hui Zhang, Yi Zhang, Zhan Kong","submitted_at":"2021-04-13T11:39:52Z","abstract_excerpt":"The tunneling of electrons and holes in quantum structures plays a crucial role in studying the transport properties of materials and the related devices. 8-Pmmn borophene is a new two-dimensional Dirac material, which hosts tilted Dirac cone and chiral, anisotropic massless Dirac fermions. We develop the transfer matrix method to investigate the Klein tunneling of massless fermions across the smooth NP junctions and NPN junctions of 8-Pmmn borophene. Like the sharp NP junctions of 8-Pmmn borophene, the tilted Dirac cones induce the oblique Klein tunneling. The angle of perfect transmission to"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.07450","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2104.07450/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T03:03:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"43lsev4PL66a5w1QGTEbhrOk8OmkfhBZRexGsXus0QkZkG1go+QcxxbKHdNcG0H7pYQ4kO1XDRxEpY68yBVZDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-12T19:41:46.366828Z"},"content_sha256":"189e6200b6d2ca6b2f28a7d764827fe9126bd13f01da91c1112387332a68fd11","schema_version":"1.0","event_id":"sha256:189e6200b6d2ca6b2f28a7d764827fe9126bd13f01da91c1112387332a68fd11"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NGU5J73EP35IAXFLUMHS7BUG7E/bundle.json","state_url":"https://pith.science/pith/NGU5J73EP35IAXFLUMHS7BUG7E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NGU5J73EP35IAXFLUMHS7BUG7E/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":"2026-07-12T19:41:46Z","links":{"resolver":"https://pith.science/pith/NGU5J73EP35IAXFLUMHS7BUG7E","bundle":"https://pith.science/pith/NGU5J73EP35IAXFLUMHS7BUG7E/bundle.json","state":"https://pith.science/pith/NGU5J73EP35IAXFLUMHS7BUG7E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NGU5J73EP35IAXFLUMHS7BUG7E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:NGU5J73EP35IAXFLUMHS7BUG7E","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":"8cdac64017ebce14f1f8c30a59853e930056e30f12110a371837432916efaa42","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-04-13T11:39:52Z","title_canon_sha256":"e76c820457359700c558fb60d0f254451bf62c06e274fe63d0dc211a5f3bb194"},"schema_version":"1.0","source":{"id":"2104.07450","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.07450","created_at":"2026-07-05T03:03:08Z"},{"alias_kind":"arxiv_version","alias_value":"2104.07450v3","created_at":"2026-07-05T03:03:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.07450","created_at":"2026-07-05T03:03:08Z"},{"alias_kind":"pith_short_12","alias_value":"NGU5J73EP35I","created_at":"2026-07-05T03:03:08Z"},{"alias_kind":"pith_short_16","alias_value":"NGU5J73EP35IAXFL","created_at":"2026-07-05T03:03:08Z"},{"alias_kind":"pith_short_8","alias_value":"NGU5J73E","created_at":"2026-07-05T03:03:08Z"}],"graph_snapshots":[{"event_id":"sha256:189e6200b6d2ca6b2f28a7d764827fe9126bd13f01da91c1112387332a68fd11","target":"graph","created_at":"2026-07-05T03:03:08Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2104.07450/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The tunneling of electrons and holes in quantum structures plays a crucial role in studying the transport properties of materials and the related devices. 8-Pmmn borophene is a new two-dimensional Dirac material, which hosts tilted Dirac cone and chiral, anisotropic massless Dirac fermions. We develop the transfer matrix method to investigate the Klein tunneling of massless fermions across the smooth NP junctions and NPN junctions of 8-Pmmn borophene. Like the sharp NP junctions of 8-Pmmn borophene, the tilted Dirac cones induce the oblique Klein tunneling. The angle of perfect transmission to","authors_text":"Jia-Ji Zhu, Jian Li, Shu-Hui Zhang, Yi Zhang, Zhan Kong","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-04-13T11:39:52Z","title":"Oblique and asymmetric Klein tunneling across smooth NP junctions or NPN junctions in 8-Pmmn borophene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.07450","kind":"arxiv","version":3},"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:bfc7f6e84fb36356807c2c9ae3fee2f995d8b556dde2b1d48d323d69c930280f","target":"record","created_at":"2026-07-05T03:03:08Z","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":"8cdac64017ebce14f1f8c30a59853e930056e30f12110a371837432916efaa42","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-04-13T11:39:52Z","title_canon_sha256":"e76c820457359700c558fb60d0f254451bf62c06e274fe63d0dc211a5f3bb194"},"schema_version":"1.0","source":{"id":"2104.07450","kind":"arxiv","version":3}},"canonical_sha256":"69a9d4ff647efa805caba30f2f8686f91da9984ecd2d9da3c7e96b12926c4c7f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"69a9d4ff647efa805caba30f2f8686f91da9984ecd2d9da3c7e96b12926c4c7f","first_computed_at":"2026-07-05T03:03:08.306461Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:03:08.306461Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/5/ZGkCIETmKHglfYijtAclWkobvAzEADE9GmUUc+sJz7RgrTHitQLvJPM3Edfp0x1qrBi92x5NMitg9luX4Bg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:03:08.306874Z","signed_message":"canonical_sha256_bytes"},"source_id":"2104.07450","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bfc7f6e84fb36356807c2c9ae3fee2f995d8b556dde2b1d48d323d69c930280f","sha256:189e6200b6d2ca6b2f28a7d764827fe9126bd13f01da91c1112387332a68fd11"],"state_sha256":"a6ab9ed977971d3826eb9a80c4c978eb3b0f08ca1fdd8996dc6a1bbfc9491a22"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+hU54imt6zuJwJ3yTgxj1xtzw/jVQVrJiHN0RCpmgOlPogiw5/FA1uxAZ8uCSYLxKw+g34Vg52OJ7DpWYdr8BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-12T19:41:46.369335Z","bundle_sha256":"6325e9662c2df4eae27400531422076464955fe08a9862d395e5128be5da0bb4"}}