{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:7TEXSRW6VIO6UPRNTFH6Z5SGW7","short_pith_number":"pith:7TEXSRW6","schema_version":"1.0","canonical_sha256":"fcc97946deaa1dea3e2d994fecf646b7c624eab1fc755113fe5646ddf3d04f7b","source":{"kind":"arxiv","id":"1407.1226","version":2},"attestation_state":"computed","paper":{"title":"Group Theory analysis of phonons in two-dimensional Transition Metal Dichalcogenides","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"2), 3), 5), A. Jorio (1) ((1) Departamento de F\\'isica, Astronomy, Computer Science, E. B. Barros (2, J. Ribeiro-Soares (1, L. G. Can\\c{c}ado (1), Massachusetts Institute of Technology), Massachusetts Institute of Technology (3) Departamento de F\\'isica, M. S. Dresselhaus (2, P. T. Araujo (4), R. M. Almeida (1), Universidade Federal de Minas Gerais (2) Department of Electrical Engineering, Universidade Federal do Cear\\'a (4) Department of Physics, University of Alabama (5) Department of Physics","submitted_at":"2014-07-03T18:46:06Z","abstract_excerpt":"Transition metal dichalcogenides (TMDCs) have emerged as a new two dimensional materials field since the monolayer and few-layer limits show different properties when compared to each other and to their respective bulk materials. For example, in some cases when the bulk material is exfoliated down to a monolayer, an indirect-to-direct band gap in the visible range is observed. The number of layers $N$ ($N$ even or odd) drives changes in space group symmetry that are reflected in the optical properties. The understanding of the space group symmetry as a function of the number of layers is there"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1407.1226","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-07-03T18:46:06Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"50856617fc07dde35b0741daab12c16c2ca2d80d6b6bbcb6098c684679d342a3","abstract_canon_sha256":"1485663921e0104be5ef44b264c0bcf54b87cb69322c931d9b548e9f55133277"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:41:18.476774Z","signature_b64":"xOMqPXrr0OUTiDEKwfnYSW+GbPGGbukEPEFEY3k/d2FYDT7misPOv24KXziWLyuqAC49sRYI6A1Tdo34T0RBBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fcc97946deaa1dea3e2d994fecf646b7c624eab1fc755113fe5646ddf3d04f7b","last_reissued_at":"2026-05-18T02:41:18.476326Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:41:18.476326Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Group Theory analysis of phonons in two-dimensional Transition Metal Dichalcogenides","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"2), 3), 5), A. Jorio (1) ((1) Departamento de F\\'isica, Astronomy, Computer Science, E. B. Barros (2, J. Ribeiro-Soares (1, L. G. Can\\c{c}ado (1), Massachusetts Institute of Technology), Massachusetts Institute of Technology (3) Departamento de F\\'isica, M. S. Dresselhaus (2, P. T. Araujo (4), R. M. Almeida (1), Universidade Federal de Minas Gerais (2) Department of Electrical Engineering, Universidade Federal do Cear\\'a (4) Department of Physics, University of Alabama (5) Department of Physics","submitted_at":"2014-07-03T18:46:06Z","abstract_excerpt":"Transition metal dichalcogenides (TMDCs) have emerged as a new two dimensional materials field since the monolayer and few-layer limits show different properties when compared to each other and to their respective bulk materials. For example, in some cases when the bulk material is exfoliated down to a monolayer, an indirect-to-direct band gap in the visible range is observed. The number of layers $N$ ($N$ even or odd) drives changes in space group symmetry that are reflected in the optical properties. The understanding of the space group symmetry as a function of the number of layers is there"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.1226","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":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1407.1226","created_at":"2026-05-18T02:41:18.476390+00:00"},{"alias_kind":"arxiv_version","alias_value":"1407.1226v2","created_at":"2026-05-18T02:41:18.476390+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.1226","created_at":"2026-05-18T02:41:18.476390+00:00"},{"alias_kind":"pith_short_12","alias_value":"7TEXSRW6VIO6","created_at":"2026-05-18T12:28:19.803747+00:00"},{"alias_kind":"pith_short_16","alias_value":"7TEXSRW6VIO6UPRN","created_at":"2026-05-18T12:28:19.803747+00:00"},{"alias_kind":"pith_short_8","alias_value":"7TEXSRW6","created_at":"2026-05-18T12:28:19.803747+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/7TEXSRW6VIO6UPRNTFH6Z5SGW7","json":"https://pith.science/pith/7TEXSRW6VIO6UPRNTFH6Z5SGW7.json","graph_json":"https://pith.science/api/pith-number/7TEXSRW6VIO6UPRNTFH6Z5SGW7/graph.json","events_json":"https://pith.science/api/pith-number/7TEXSRW6VIO6UPRNTFH6Z5SGW7/events.json","paper":"https://pith.science/paper/7TEXSRW6"},"agent_actions":{"view_html":"https://pith.science/pith/7TEXSRW6VIO6UPRNTFH6Z5SGW7","download_json":"https://pith.science/pith/7TEXSRW6VIO6UPRNTFH6Z5SGW7.json","view_paper":"https://pith.science/paper/7TEXSRW6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1407.1226&json=true","fetch_graph":"https://pith.science/api/pith-number/7TEXSRW6VIO6UPRNTFH6Z5SGW7/graph.json","fetch_events":"https://pith.science/api/pith-number/7TEXSRW6VIO6UPRNTFH6Z5SGW7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7TEXSRW6VIO6UPRNTFH6Z5SGW7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7TEXSRW6VIO6UPRNTFH6Z5SGW7/action/storage_attestation","attest_author":"https://pith.science/pith/7TEXSRW6VIO6UPRNTFH6Z5SGW7/action/author_attestation","sign_citation":"https://pith.science/pith/7TEXSRW6VIO6UPRNTFH6Z5SGW7/action/citation_signature","submit_replication":"https://pith.science/pith/7TEXSRW6VIO6UPRNTFH6Z5SGW7/action/replication_record"}},"created_at":"2026-05-18T02:41:18.476390+00:00","updated_at":"2026-05-18T02:41:18.476390+00:00"}