{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:VZMXITEXNXOHVXUQGLXJCLZDWH","short_pith_number":"pith:VZMXITEX","canonical_record":{"source":{"id":"2103.14832","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-03-27T07:37:36Z","cross_cats_sorted":[],"title_canon_sha256":"6d74637f9b84171bd77e38784f7ca6367348ab5b13dc46ec3b91b73bb345365a","abstract_canon_sha256":"e7f6abe5362dd53484627a4598f0663c72549a81ac1b74658c290bc7499639a5"},"schema_version":"1.0"},"canonical_sha256":"ae59744c976ddc7ade9032ee912f23b1d883a2c7ab82e21e57ebd5d6d5d3be54","source":{"kind":"arxiv","id":"2103.14832","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.14832","created_at":"2026-07-05T03:16:11Z"},{"alias_kind":"arxiv_version","alias_value":"2103.14832v2","created_at":"2026-07-05T03:16:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.14832","created_at":"2026-07-05T03:16:11Z"},{"alias_kind":"pith_short_12","alias_value":"VZMXITEXNXOH","created_at":"2026-07-05T03:16:11Z"},{"alias_kind":"pith_short_16","alias_value":"VZMXITEXNXOHVXUQ","created_at":"2026-07-05T03:16:11Z"},{"alias_kind":"pith_short_8","alias_value":"VZMXITEX","created_at":"2026-07-05T03:16:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:VZMXITEXNXOHVXUQGLXJCLZDWH","target":"record","payload":{"canonical_record":{"source":{"id":"2103.14832","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-03-27T07:37:36Z","cross_cats_sorted":[],"title_canon_sha256":"6d74637f9b84171bd77e38784f7ca6367348ab5b13dc46ec3b91b73bb345365a","abstract_canon_sha256":"e7f6abe5362dd53484627a4598f0663c72549a81ac1b74658c290bc7499639a5"},"schema_version":"1.0"},"canonical_sha256":"ae59744c976ddc7ade9032ee912f23b1d883a2c7ab82e21e57ebd5d6d5d3be54","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:16:11.617912Z","signature_b64":"0r37kTDFWcrM2YtmnZe98sPIOfp5Uq0PMNvEsTnqRu4HeKkbFHFXBUEu48vVbqevzsZDW8quUUPZss8lXehjDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ae59744c976ddc7ade9032ee912f23b1d883a2c7ab82e21e57ebd5d6d5d3be54","last_reissued_at":"2026-07-05T03:16:11.617406Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:16:11.617406Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2103.14832","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":"2026-07-05T03:16:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9B2cJlZzC2pmYt05Cfj5I9oO2bDcHatIcJkuxhh23v+1qoUJU0u9hxKEZSWo7nUk8UHRv0ecICd9s1z6174wBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T14:58:44.041510Z"},"content_sha256":"7bd3f62a49f3e30c16aade028d618986349fdcee34821c8cd8761bb5e4f21b95","schema_version":"1.0","event_id":"sha256:7bd3f62a49f3e30c16aade028d618986349fdcee34821c8cd8761bb5e4f21b95"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:VZMXITEXNXOHVXUQGLXJCLZDWH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ultrafast Modulations And Detection of a Ferro-rotational Charge Density Wave Using Time-resolved Electric Quadrupole Second Harmonic Generation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Choongjae Won, Dimuthu Obeysekera, Junjie Yang, Kai Sun, Liuyan Zhao, Noah Schnitzer, Robert Hovden, Sang-Wook Cheong, Suk Hyun Sung, Xiangpeng Luo","submitted_at":"2021-03-27T07:37:36Z","abstract_excerpt":"We show the ferro-rotational nature of the commensurate charge density wave (CCDW) in $1T$-$\\mathrm{TaS}_2$ and track its dynamic modulations by temperature-dependent and time-resolved electric quadrupole rotation anisotropy-second harmonic generation (EQ RA-SHG), respectively. The ultrafast modulations manifest as the breathing and the rotation of the EQ RA-SHG patterns at three frequencies around the reported single CCDW amplitude mode frequency. A sudden shift of the triplet frequencies and a dramatic increase in the breathing and rotation magnitude further reveal a photo-induced transient "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.14832","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2103.14832/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":"2026-07-05T03:16:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p62nAh+MThRCyUwv6keGMCL9rFjbgbLRdaXGu3neRCERmyXr6+BqmIPpBiM2ING90C5XQcWMh0oKkC5MxxEYAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T14:58:44.041844Z"},"content_sha256":"19e31f9977bbab1acb683e414473cd4622c0fea7820675e4775fb0c0efe352ba","schema_version":"1.0","event_id":"sha256:19e31f9977bbab1acb683e414473cd4622c0fea7820675e4775fb0c0efe352ba"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VZMXITEXNXOHVXUQGLXJCLZDWH/bundle.json","state_url":"https://pith.science/pith/VZMXITEXNXOHVXUQGLXJCLZDWH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VZMXITEXNXOHVXUQGLXJCLZDWH/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":"2026-07-31T14:58:44Z","links":{"resolver":"https://pith.science/pith/VZMXITEXNXOHVXUQGLXJCLZDWH","bundle":"https://pith.science/pith/VZMXITEXNXOHVXUQGLXJCLZDWH/bundle.json","state":"https://pith.science/pith/VZMXITEXNXOHVXUQGLXJCLZDWH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VZMXITEXNXOHVXUQGLXJCLZDWH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:VZMXITEXNXOHVXUQGLXJCLZDWH","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":"e7f6abe5362dd53484627a4598f0663c72549a81ac1b74658c290bc7499639a5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-03-27T07:37:36Z","title_canon_sha256":"6d74637f9b84171bd77e38784f7ca6367348ab5b13dc46ec3b91b73bb345365a"},"schema_version":"1.0","source":{"id":"2103.14832","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.14832","created_at":"2026-07-05T03:16:11Z"},{"alias_kind":"arxiv_version","alias_value":"2103.14832v2","created_at":"2026-07-05T03:16:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.14832","created_at":"2026-07-05T03:16:11Z"},{"alias_kind":"pith_short_12","alias_value":"VZMXITEXNXOH","created_at":"2026-07-05T03:16:11Z"},{"alias_kind":"pith_short_16","alias_value":"VZMXITEXNXOHVXUQ","created_at":"2026-07-05T03:16:11Z"},{"alias_kind":"pith_short_8","alias_value":"VZMXITEX","created_at":"2026-07-05T03:16:11Z"}],"graph_snapshots":[{"event_id":"sha256:19e31f9977bbab1acb683e414473cd4622c0fea7820675e4775fb0c0efe352ba","target":"graph","created_at":"2026-07-05T03:16:11Z","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/2103.14832/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We show the ferro-rotational nature of the commensurate charge density wave (CCDW) in $1T$-$\\mathrm{TaS}_2$ and track its dynamic modulations by temperature-dependent and time-resolved electric quadrupole rotation anisotropy-second harmonic generation (EQ RA-SHG), respectively. The ultrafast modulations manifest as the breathing and the rotation of the EQ RA-SHG patterns at three frequencies around the reported single CCDW amplitude mode frequency. A sudden shift of the triplet frequencies and a dramatic increase in the breathing and rotation magnitude further reveal a photo-induced transient ","authors_text":"Choongjae Won, Dimuthu Obeysekera, Junjie Yang, Kai Sun, Liuyan Zhao, Noah Schnitzer, Robert Hovden, Sang-Wook Cheong, Suk Hyun Sung, Xiangpeng Luo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-03-27T07:37:36Z","title":"Ultrafast Modulations And Detection of a Ferro-rotational Charge Density Wave Using Time-resolved Electric Quadrupole Second Harmonic Generation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.14832","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":"sha256:7bd3f62a49f3e30c16aade028d618986349fdcee34821c8cd8761bb5e4f21b95","target":"record","created_at":"2026-07-05T03:16:11Z","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":"e7f6abe5362dd53484627a4598f0663c72549a81ac1b74658c290bc7499639a5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-03-27T07:37:36Z","title_canon_sha256":"6d74637f9b84171bd77e38784f7ca6367348ab5b13dc46ec3b91b73bb345365a"},"schema_version":"1.0","source":{"id":"2103.14832","kind":"arxiv","version":2}},"canonical_sha256":"ae59744c976ddc7ade9032ee912f23b1d883a2c7ab82e21e57ebd5d6d5d3be54","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ae59744c976ddc7ade9032ee912f23b1d883a2c7ab82e21e57ebd5d6d5d3be54","first_computed_at":"2026-07-05T03:16:11.617406Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:16:11.617406Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0r37kTDFWcrM2YtmnZe98sPIOfp5Uq0PMNvEsTnqRu4HeKkbFHFXBUEu48vVbqevzsZDW8quUUPZss8lXehjDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:16:11.617912Z","signed_message":"canonical_sha256_bytes"},"source_id":"2103.14832","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7bd3f62a49f3e30c16aade028d618986349fdcee34821c8cd8761bb5e4f21b95","sha256:19e31f9977bbab1acb683e414473cd4622c0fea7820675e4775fb0c0efe352ba"],"state_sha256":"bd67acd79fba8618a4d72b9484af472a2718f2c2c8e14897141814a1938c5878"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X5bNu01VtbXFJoHr1ilhCa9JkEzs7vo+FG884svhcxn7Ed53P5wKvZOakcSZJyCHi1nt+GnIQYgBEeofhT29BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-31T14:58:44.046034Z","bundle_sha256":"53c57909feb390200783ebfcb5e6dec78cb997d8e22e0db1cf872c0564feeecc"}}