{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:VIW6WSXLJDIRDKLAV5QSIODYS6","short_pith_number":"pith:VIW6WSXL","canonical_record":{"source":{"id":"1502.07088","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-02-25T09:12:36Z","cross_cats_sorted":[],"title_canon_sha256":"c9e357336c4a273477592ec528d068539f3461dc4709ef1da46439b9ceb2f6ba","abstract_canon_sha256":"ef38988da5bab5aefd1b5fa0cd50f385e15a7a7c96c603508da82a5727c8bcdc"},"schema_version":"1.0"},"canonical_sha256":"aa2deb4aeb48d111a960af612438789780ea8eadf206cab6726dd0d813141678","source":{"kind":"arxiv","id":"1502.07088","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.07088","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"arxiv_version","alias_value":"1502.07088v3","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.07088","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"pith_short_12","alias_value":"VIW6WSXLJDIR","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"VIW6WSXLJDIRDKLA","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"VIW6WSXL","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:VIW6WSXLJDIRDKLAV5QSIODYS6","target":"record","payload":{"canonical_record":{"source":{"id":"1502.07088","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-02-25T09:12:36Z","cross_cats_sorted":[],"title_canon_sha256":"c9e357336c4a273477592ec528d068539f3461dc4709ef1da46439b9ceb2f6ba","abstract_canon_sha256":"ef38988da5bab5aefd1b5fa0cd50f385e15a7a7c96c603508da82a5727c8bcdc"},"schema_version":"1.0"},"canonical_sha256":"aa2deb4aeb48d111a960af612438789780ea8eadf206cab6726dd0d813141678","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:25:04.399811Z","signature_b64":"FXKEXPo0fak30heyvkmFlt0FTluTKm9X65nOhLnleOtFvbsNw81sn1gvQXQdce90CW05xRrmipkTNdJk0uvWDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aa2deb4aeb48d111a960af612438789780ea8eadf206cab6726dd0d813141678","last_reissued_at":"2026-05-18T02:25:04.399469Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:25:04.399469Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.07088","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":"2026-05-18T02:25:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W8vFAxXWdM9mWQnkwZRSrfZL61CLm5koyZa/5UmmBO5Kk+9h7QKXyNZgx+z52JSNQl+S2wmkVmFeRM8WHlqCAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:56:44.000462Z"},"content_sha256":"2d2e212307e65369af74ddb4dc7cdc502a37378c5ac34c3f3c4a74b90a58aa7a","schema_version":"1.0","event_id":"sha256:2d2e212307e65369af74ddb4dc7cdc502a37378c5ac34c3f3c4a74b90a58aa7a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:VIW6WSXLJDIRDKLAV5QSIODYS6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Valley depolarization in monolayer WSe2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Pingheng Tan, Tengfei Yan, Xiaofen Qiao, Xinhui Zhang","submitted_at":"2015-02-25T09:12:36Z","abstract_excerpt":"We have systematically examined the circular polarization of monolayer WSe2 at different temperature, excitation energy and exciton density. The valley depolarization in WSe2 is experimentally confirmed to be governed by the intervalley electron-hole exchange interaction. More importantly, a non-monotonic dependence of valley circular polarization on the excitation power density has been observed, providing the experimental evidence for the non-monotonic dependence of exciton intervalley scattering rate on the excited exciton density. The physical origination of our experimental observations h"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.07088","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":""},"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":"2026-05-18T02:25:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"poXDzKU3I2GqwCwbmuwudePn2IVAouo5r7VTTIxF3EtDuQFSSEuDbtU21qWl0GB1Yg7HfPSkbtd2Gqf0rUjwCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:56:44.000816Z"},"content_sha256":"21586ffb3881d454077dbc3abcedf395dda37a34da91d181849944dacc8738ba","schema_version":"1.0","event_id":"sha256:21586ffb3881d454077dbc3abcedf395dda37a34da91d181849944dacc8738ba"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VIW6WSXLJDIRDKLAV5QSIODYS6/bundle.json","state_url":"https://pith.science/pith/VIW6WSXLJDIRDKLAV5QSIODYS6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VIW6WSXLJDIRDKLAV5QSIODYS6/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":"2026-06-01T17:56:44Z","links":{"resolver":"https://pith.science/pith/VIW6WSXLJDIRDKLAV5QSIODYS6","bundle":"https://pith.science/pith/VIW6WSXLJDIRDKLAV5QSIODYS6/bundle.json","state":"https://pith.science/pith/VIW6WSXLJDIRDKLAV5QSIODYS6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VIW6WSXLJDIRDKLAV5QSIODYS6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:VIW6WSXLJDIRDKLAV5QSIODYS6","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":"ef38988da5bab5aefd1b5fa0cd50f385e15a7a7c96c603508da82a5727c8bcdc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-02-25T09:12:36Z","title_canon_sha256":"c9e357336c4a273477592ec528d068539f3461dc4709ef1da46439b9ceb2f6ba"},"schema_version":"1.0","source":{"id":"1502.07088","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.07088","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"arxiv_version","alias_value":"1502.07088v3","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.07088","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"pith_short_12","alias_value":"VIW6WSXLJDIR","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"VIW6WSXLJDIRDKLA","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"VIW6WSXL","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:21586ffb3881d454077dbc3abcedf395dda37a34da91d181849944dacc8738ba","target":"graph","created_at":"2026-05-18T02:25:04Z","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":"We have systematically examined the circular polarization of monolayer WSe2 at different temperature, excitation energy and exciton density. The valley depolarization in WSe2 is experimentally confirmed to be governed by the intervalley electron-hole exchange interaction. More importantly, a non-monotonic dependence of valley circular polarization on the excitation power density has been observed, providing the experimental evidence for the non-monotonic dependence of exciton intervalley scattering rate on the excited exciton density. The physical origination of our experimental observations h","authors_text":"Pingheng Tan, Tengfei Yan, Xiaofen Qiao, Xinhui Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-02-25T09:12:36Z","title":"Valley depolarization in monolayer WSe2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.07088","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":"sha256:2d2e212307e65369af74ddb4dc7cdc502a37378c5ac34c3f3c4a74b90a58aa7a","target":"record","created_at":"2026-05-18T02:25:04Z","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":"ef38988da5bab5aefd1b5fa0cd50f385e15a7a7c96c603508da82a5727c8bcdc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-02-25T09:12:36Z","title_canon_sha256":"c9e357336c4a273477592ec528d068539f3461dc4709ef1da46439b9ceb2f6ba"},"schema_version":"1.0","source":{"id":"1502.07088","kind":"arxiv","version":3}},"canonical_sha256":"aa2deb4aeb48d111a960af612438789780ea8eadf206cab6726dd0d813141678","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aa2deb4aeb48d111a960af612438789780ea8eadf206cab6726dd0d813141678","first_computed_at":"2026-05-18T02:25:04.399469Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:25:04.399469Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FXKEXPo0fak30heyvkmFlt0FTluTKm9X65nOhLnleOtFvbsNw81sn1gvQXQdce90CW05xRrmipkTNdJk0uvWDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:25:04.399811Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.07088","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2d2e212307e65369af74ddb4dc7cdc502a37378c5ac34c3f3c4a74b90a58aa7a","sha256:21586ffb3881d454077dbc3abcedf395dda37a34da91d181849944dacc8738ba"],"state_sha256":"60e4370264358b51a72ffe3eaa07e0ca4c4aece379cdc59ec60640f321df6983"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t/Kz/G8DQ332YMPZVoFnXrWLGEX3zIOm+fLtr3/LOAHJ4aVy8fif8c3TfkfgyzCDui2UhyHyUT8a1UEghfndDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T17:56:44.002930Z","bundle_sha256":"95c158f5c0a645866a258108458806d5b2634a1268d187950ebb5776f3b2585b"}}