{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:2WEGM63MLZI3SDXEZBNRUTJ5BE","short_pith_number":"pith:2WEGM63M","canonical_record":{"source":{"id":"2001.09536","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-01-26T23:13:46Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"72425d74398b78635bd5cc8aac626b4b6bf5e5b34d272223d5ffe942314fc5f9","abstract_canon_sha256":"d9691ca24ae548cd0bbcbc772bf1b7ae25245d6eebbe723317e97a85c8c4dca3"},"schema_version":"1.0"},"canonical_sha256":"d588667b6c5e51b90ee4c85b1a4d3d09011c143d39507655d750832df5b43f18","source":{"kind":"arxiv","id":"2001.09536","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.09536","created_at":"2026-07-05T00:52:07Z"},{"alias_kind":"arxiv_version","alias_value":"2001.09536v1","created_at":"2026-07-05T00:52:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.09536","created_at":"2026-07-05T00:52:07Z"},{"alias_kind":"pith_short_12","alias_value":"2WEGM63MLZI3","created_at":"2026-07-05T00:52:07Z"},{"alias_kind":"pith_short_16","alias_value":"2WEGM63MLZI3SDXE","created_at":"2026-07-05T00:52:07Z"},{"alias_kind":"pith_short_8","alias_value":"2WEGM63M","created_at":"2026-07-05T00:52:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:2WEGM63MLZI3SDXEZBNRUTJ5BE","target":"record","payload":{"canonical_record":{"source":{"id":"2001.09536","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-01-26T23:13:46Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"72425d74398b78635bd5cc8aac626b4b6bf5e5b34d272223d5ffe942314fc5f9","abstract_canon_sha256":"d9691ca24ae548cd0bbcbc772bf1b7ae25245d6eebbe723317e97a85c8c4dca3"},"schema_version":"1.0"},"canonical_sha256":"d588667b6c5e51b90ee4c85b1a4d3d09011c143d39507655d750832df5b43f18","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:52:07.089245Z","signature_b64":"BSJawUguGcrytBrAdipsDTc/h4Rd0cmvESq+t1ksGkdczpP7pe8R7yh3RrbStS5KRoiyywsvTGkoTNywD6vvCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d588667b6c5e51b90ee4c85b1a4d3d09011c143d39507655d750832df5b43f18","last_reissued_at":"2026-07-05T00:52:07.088676Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:52:07.088676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2001.09536","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":"2026-07-05T00:52:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J+OfuHuodWv6kTRKfaG6h/r3HtCzjjMghu6igAjaDdWXF4aSO3+a6Se6y/w3sfeEL3ZY6rgsGn0HK2QBUZ64Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-25T01:45:47.004241Z"},"content_sha256":"01f4dc8c9a3598a915a58863a3ae835f3c37b8771fe931c9656539aa018a84b9","schema_version":"1.0","event_id":"sha256:01f4dc8c9a3598a915a58863a3ae835f3c37b8771fe931c9656539aa018a84b9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:2WEGM63MLZI3SDXEZBNRUTJ5BE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetic field-induced quantum phase transitions in a van der Waals magnet","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Adam W. Tsen, Bowen Yang, Chenghe Li, Gaihua Ye, Hechang Lei, Hyun Ho Kim, Kai Sun, Liuyan Zhao, Rui He, Shangjie Tian, Siwen Li, Xiangpeng Luo, Zhipeng Ye","submitted_at":"2020-01-26T23:13:46Z","abstract_excerpt":"Exploring new parameter regimes to realize and control novel phases of matter has been a main theme in modern condensed matter physics research. The recent discovery of 2D magnetism in nearly freestanding monolayer atomic crystals has already led to observations of a number of novel magnetic phenomena absent in bulk counterparts. Such intricate interplays between magnetism and crystalline structures provide ample opportunities for exploring quantum phase transitions in this new 2D parameter regime. Here, using magnetic field and temperature dependent circularly polarized Raman spectroscopy of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.09536","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/2001.09536/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":"2026-07-05T00:52:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cNUB1SpOxTQeisZsmgZv69YLKDfwARg1Mas4wDwX3jAU8CPeZueKAYqyx7XxPqlhebBuEb04mTOHDVMG5QKqCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-25T01:45:47.004776Z"},"content_sha256":"8513c9e196aa7b8eefb37ee1f61421cc5966b5865fd2e3e222b0119c06d52211","schema_version":"1.0","event_id":"sha256:8513c9e196aa7b8eefb37ee1f61421cc5966b5865fd2e3e222b0119c06d52211"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2WEGM63MLZI3SDXEZBNRUTJ5BE/bundle.json","state_url":"https://pith.science/pith/2WEGM63MLZI3SDXEZBNRUTJ5BE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2WEGM63MLZI3SDXEZBNRUTJ5BE/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":"2026-07-25T01:45:47Z","links":{"resolver":"https://pith.science/pith/2WEGM63MLZI3SDXEZBNRUTJ5BE","bundle":"https://pith.science/pith/2WEGM63MLZI3SDXEZBNRUTJ5BE/bundle.json","state":"https://pith.science/pith/2WEGM63MLZI3SDXEZBNRUTJ5BE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2WEGM63MLZI3SDXEZBNRUTJ5BE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:2WEGM63MLZI3SDXEZBNRUTJ5BE","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":"d9691ca24ae548cd0bbcbc772bf1b7ae25245d6eebbe723317e97a85c8c4dca3","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-01-26T23:13:46Z","title_canon_sha256":"72425d74398b78635bd5cc8aac626b4b6bf5e5b34d272223d5ffe942314fc5f9"},"schema_version":"1.0","source":{"id":"2001.09536","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.09536","created_at":"2026-07-05T00:52:07Z"},{"alias_kind":"arxiv_version","alias_value":"2001.09536v1","created_at":"2026-07-05T00:52:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.09536","created_at":"2026-07-05T00:52:07Z"},{"alias_kind":"pith_short_12","alias_value":"2WEGM63MLZI3","created_at":"2026-07-05T00:52:07Z"},{"alias_kind":"pith_short_16","alias_value":"2WEGM63MLZI3SDXE","created_at":"2026-07-05T00:52:07Z"},{"alias_kind":"pith_short_8","alias_value":"2WEGM63M","created_at":"2026-07-05T00:52:07Z"}],"graph_snapshots":[{"event_id":"sha256:8513c9e196aa7b8eefb37ee1f61421cc5966b5865fd2e3e222b0119c06d52211","target":"graph","created_at":"2026-07-05T00:52:07Z","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/2001.09536/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Exploring new parameter regimes to realize and control novel phases of matter has been a main theme in modern condensed matter physics research. The recent discovery of 2D magnetism in nearly freestanding monolayer atomic crystals has already led to observations of a number of novel magnetic phenomena absent in bulk counterparts. Such intricate interplays between magnetism and crystalline structures provide ample opportunities for exploring quantum phase transitions in this new 2D parameter regime. Here, using magnetic field and temperature dependent circularly polarized Raman spectroscopy of ","authors_text":"Adam W. Tsen, Bowen Yang, Chenghe Li, Gaihua Ye, Hechang Lei, Hyun Ho Kim, Kai Sun, Liuyan Zhao, Rui He, Shangjie Tian, Siwen Li, Xiangpeng Luo, Zhipeng Ye","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-01-26T23:13:46Z","title":"Magnetic field-induced quantum phase transitions in a van der Waals magnet"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.09536","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":"sha256:01f4dc8c9a3598a915a58863a3ae835f3c37b8771fe931c9656539aa018a84b9","target":"record","created_at":"2026-07-05T00:52:07Z","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":"d9691ca24ae548cd0bbcbc772bf1b7ae25245d6eebbe723317e97a85c8c4dca3","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-01-26T23:13:46Z","title_canon_sha256":"72425d74398b78635bd5cc8aac626b4b6bf5e5b34d272223d5ffe942314fc5f9"},"schema_version":"1.0","source":{"id":"2001.09536","kind":"arxiv","version":1}},"canonical_sha256":"d588667b6c5e51b90ee4c85b1a4d3d09011c143d39507655d750832df5b43f18","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d588667b6c5e51b90ee4c85b1a4d3d09011c143d39507655d750832df5b43f18","first_computed_at":"2026-07-05T00:52:07.088676Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:52:07.088676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BSJawUguGcrytBrAdipsDTc/h4Rd0cmvESq+t1ksGkdczpP7pe8R7yh3RrbStS5KRoiyywsvTGkoTNywD6vvCA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:52:07.089245Z","signed_message":"canonical_sha256_bytes"},"source_id":"2001.09536","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:01f4dc8c9a3598a915a58863a3ae835f3c37b8771fe931c9656539aa018a84b9","sha256:8513c9e196aa7b8eefb37ee1f61421cc5966b5865fd2e3e222b0119c06d52211"],"state_sha256":"b1cee3ce52c8fc629d3e3240e43293a83b746ce34e21f0ec1354030ae9e39653"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CbXQ95qQXOtvnno1F3iNdNAKjvshmf1PPLKXX+/Ulojx+B7XpCVO1q7syNMUkalKbZg5bLeKozSgFUlrEhAtDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-25T01:45:47.007286Z","bundle_sha256":"2bb6b0131572d37f7d66faa957bde6a0022369a7982140e959d1d48dfe1750e0"}}