{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:RQTQUDHPXAIS44DOBK6IYVD6VE","short_pith_number":"pith:RQTQUDHP","canonical_record":{"source":{"id":"2007.06182","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-07-13T04:35:09Z","cross_cats_sorted":["cond-mat.mes-hall","physics.app-ph"],"title_canon_sha256":"f7079f1ac8aacab004842fd83e87e3f6e3f99815e398e65ce8c64641621d536b","abstract_canon_sha256":"56d24b406f49591dfae32535918a6d79303219484b41e81662f8613b1e2bca64"},"schema_version":"1.0"},"canonical_sha256":"8c270a0cefb8112e706e0abc8c547ea9123f4ab7de6535c40136d9b91ed9ff93","source":{"kind":"arxiv","id":"2007.06182","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.06182","created_at":"2026-07-05T01:18:10Z"},{"alias_kind":"arxiv_version","alias_value":"2007.06182v1","created_at":"2026-07-05T01:18:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.06182","created_at":"2026-07-05T01:18:10Z"},{"alias_kind":"pith_short_12","alias_value":"RQTQUDHPXAIS","created_at":"2026-07-05T01:18:10Z"},{"alias_kind":"pith_short_16","alias_value":"RQTQUDHPXAIS44DO","created_at":"2026-07-05T01:18:10Z"},{"alias_kind":"pith_short_8","alias_value":"RQTQUDHP","created_at":"2026-07-05T01:18:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:RQTQUDHPXAIS44DOBK6IYVD6VE","target":"record","payload":{"canonical_record":{"source":{"id":"2007.06182","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-07-13T04:35:09Z","cross_cats_sorted":["cond-mat.mes-hall","physics.app-ph"],"title_canon_sha256":"f7079f1ac8aacab004842fd83e87e3f6e3f99815e398e65ce8c64641621d536b","abstract_canon_sha256":"56d24b406f49591dfae32535918a6d79303219484b41e81662f8613b1e2bca64"},"schema_version":"1.0"},"canonical_sha256":"8c270a0cefb8112e706e0abc8c547ea9123f4ab7de6535c40136d9b91ed9ff93","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:18:10.782795Z","signature_b64":"FkNpDFEuYYjmhb0+Qami7D9mjRhidj8qc2P77eQC2PJiXQONHCbrUU/P6HmIjprrjl+b2WnHtXIgGh5u4J9wBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8c270a0cefb8112e706e0abc8c547ea9123f4ab7de6535c40136d9b91ed9ff93","last_reissued_at":"2026-07-05T01:18:10.782403Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:18:10.782403Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.06182","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":"2026-07-05T01:18:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WEA0Bd4Kt2lavaflfIuNOL+eFUJKhFIQVZAEDlsCkdatMYPRZr5Q0co0LfKrqpV5tC/3TXQIklXfT1NbyQQeAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:30:12.971537Z"},"content_sha256":"df021846a3f17d1995c2112ec56bfdb39dc4b508218dd6c2704b764ceaf2e16e","schema_version":"1.0","event_id":"sha256:df021846a3f17d1995c2112ec56bfdb39dc4b508218dd6c2704b764ceaf2e16e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:RQTQUDHPXAIS44DOBK6IYVD6VE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"One nanometer HfO$_2$-based ferroelectric tunnel junctions on silicon","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","physics.app-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Adhiraj Datar, Cheng-Hsiang Hsu, Daewoong Kwon, Jongho Bae, Nirmaan Shanker, Sayeef Salahuddin, Suraj S. Cheema","submitted_at":"2020-07-13T04:35:09Z","abstract_excerpt":"In ferroelectric materials, spontaneous symmetry breaking leads to a switchable electric polarization, which offers significant promise for nonvolatile memories. In particular, ferroelectric tunnel junctions (FTJs) have emerged as a new resistive switching memory which exploit polarization-dependent tunnel current across a thin ferroelectric barrier. Here we demonstrate FTJs with CMOS-compatible Zr-doped HfO$_2$ (Zr:HfO$_2$) ferroelectric barriers of just 1 nm thickness, grown by atomic layer deposition on silicon. These 1 nm Zr:HfO$_2$ tunnel junctions exhibit large polarization-driven electr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.06182","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2007.06182/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":"2026-07-05T01:18:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u9KqMjY25U/wKqLS1AfdD2QGjCRyuZv+ivgHdGBBw549h7IrXSksOgY4g0ASg4MGl8oGYveF/ipx/sd153xyCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:30:12.972442Z"},"content_sha256":"60a72b8d134729d5ec30c2f32a14c631e9fe3d51f548e4d8d20132db7b36af6e","schema_version":"1.0","event_id":"sha256:60a72b8d134729d5ec30c2f32a14c631e9fe3d51f548e4d8d20132db7b36af6e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RQTQUDHPXAIS44DOBK6IYVD6VE/bundle.json","state_url":"https://pith.science/pith/RQTQUDHPXAIS44DOBK6IYVD6VE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RQTQUDHPXAIS44DOBK6IYVD6VE/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":"2026-08-03T16:30:12Z","links":{"resolver":"https://pith.science/pith/RQTQUDHPXAIS44DOBK6IYVD6VE","bundle":"https://pith.science/pith/RQTQUDHPXAIS44DOBK6IYVD6VE/bundle.json","state":"https://pith.science/pith/RQTQUDHPXAIS44DOBK6IYVD6VE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RQTQUDHPXAIS44DOBK6IYVD6VE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:RQTQUDHPXAIS44DOBK6IYVD6VE","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":"56d24b406f49591dfae32535918a6d79303219484b41e81662f8613b1e2bca64","cross_cats_sorted":["cond-mat.mes-hall","physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-07-13T04:35:09Z","title_canon_sha256":"f7079f1ac8aacab004842fd83e87e3f6e3f99815e398e65ce8c64641621d536b"},"schema_version":"1.0","source":{"id":"2007.06182","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.06182","created_at":"2026-07-05T01:18:10Z"},{"alias_kind":"arxiv_version","alias_value":"2007.06182v1","created_at":"2026-07-05T01:18:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.06182","created_at":"2026-07-05T01:18:10Z"},{"alias_kind":"pith_short_12","alias_value":"RQTQUDHPXAIS","created_at":"2026-07-05T01:18:10Z"},{"alias_kind":"pith_short_16","alias_value":"RQTQUDHPXAIS44DO","created_at":"2026-07-05T01:18:10Z"},{"alias_kind":"pith_short_8","alias_value":"RQTQUDHP","created_at":"2026-07-05T01:18:10Z"}],"graph_snapshots":[{"event_id":"sha256:60a72b8d134729d5ec30c2f32a14c631e9fe3d51f548e4d8d20132db7b36af6e","target":"graph","created_at":"2026-07-05T01:18:10Z","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/2007.06182/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In ferroelectric materials, spontaneous symmetry breaking leads to a switchable electric polarization, which offers significant promise for nonvolatile memories. In particular, ferroelectric tunnel junctions (FTJs) have emerged as a new resistive switching memory which exploit polarization-dependent tunnel current across a thin ferroelectric barrier. Here we demonstrate FTJs with CMOS-compatible Zr-doped HfO$_2$ (Zr:HfO$_2$) ferroelectric barriers of just 1 nm thickness, grown by atomic layer deposition on silicon. These 1 nm Zr:HfO$_2$ tunnel junctions exhibit large polarization-driven electr","authors_text":"Adhiraj Datar, Cheng-Hsiang Hsu, Daewoong Kwon, Jongho Bae, Nirmaan Shanker, Sayeef Salahuddin, Suraj S. Cheema","cross_cats":["cond-mat.mes-hall","physics.app-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-07-13T04:35:09Z","title":"One nanometer HfO$_2$-based ferroelectric tunnel junctions on silicon"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.06182","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:df021846a3f17d1995c2112ec56bfdb39dc4b508218dd6c2704b764ceaf2e16e","target":"record","created_at":"2026-07-05T01:18:10Z","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":"56d24b406f49591dfae32535918a6d79303219484b41e81662f8613b1e2bca64","cross_cats_sorted":["cond-mat.mes-hall","physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-07-13T04:35:09Z","title_canon_sha256":"f7079f1ac8aacab004842fd83e87e3f6e3f99815e398e65ce8c64641621d536b"},"schema_version":"1.0","source":{"id":"2007.06182","kind":"arxiv","version":1}},"canonical_sha256":"8c270a0cefb8112e706e0abc8c547ea9123f4ab7de6535c40136d9b91ed9ff93","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8c270a0cefb8112e706e0abc8c547ea9123f4ab7de6535c40136d9b91ed9ff93","first_computed_at":"2026-07-05T01:18:10.782403Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:18:10.782403Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FkNpDFEuYYjmhb0+Qami7D9mjRhidj8qc2P77eQC2PJiXQONHCbrUU/P6HmIjprrjl+b2WnHtXIgGh5u4J9wBg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:18:10.782795Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.06182","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:df021846a3f17d1995c2112ec56bfdb39dc4b508218dd6c2704b764ceaf2e16e","sha256:60a72b8d134729d5ec30c2f32a14c631e9fe3d51f548e4d8d20132db7b36af6e"],"state_sha256":"9c5e9f20b12e592f7963f69fa2897b109875c223b744d336d3f6261b67f65a1a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F4NANzxoiNFU7dsYtV8wDsRURU8gbkq3JhPWsIwCJ33yLzDzv31zqn9Y+cVsYz34tbBLPZrmpH++cpLAClDEBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T16:30:12.979369Z","bundle_sha256":"6b97fb062af5e9d29799049618ce5b4a3d92cd32977d11148fd153b3be5e1560"}}