{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:IYNFK5QEQIZ2JXTZGO5DV35MSU","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":"2e5df661d943957aa8caed95a99cd8728dbed0cdc8b0d304ce09ab396d37912f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-03-21T00:48:18Z","title_canon_sha256":"013a007a9ca5ee5eb5dc828051d5ee42fd4a3c81004aac1c4501227b897784f6"},"schema_version":"1.0","source":{"id":"1303.5133","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.5133","created_at":"2026-05-18T01:51:00Z"},{"alias_kind":"arxiv_version","alias_value":"1303.5133v1","created_at":"2026-05-18T01:51:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.5133","created_at":"2026-05-18T01:51:00Z"},{"alias_kind":"pith_short_12","alias_value":"IYNFK5QEQIZ2","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"IYNFK5QEQIZ2JXTZ","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"IYNFK5QE","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:2f5a4e4dda6af726984332d1f5537f3666afa4b3b0a1f3bfb44a5c76ac50db76","target":"graph","created_at":"2026-05-18T01:51:00Z","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":"Normal incidence ion irradiation at elevated temperatures, when amorphization is prevented, induces novel nanoscale patterns of crystalline structures on elemental semiconductors by a reverse epitaxial growth mechanism: on Ge surfaces irradiation at temperatures above the recrystallization temperature of 250{\\deg}C leads to self-organized patterns of inverse pyramids. Checkerboard patterns with fourfold symmetry evolve on the Ge (100) surface, whereas on the Ge (111) surface, isotropic patterns with a sixfold symmetry emerge. After high fluence irradiations these patterns exhibit well develope","authors_text":"Adrian Keller, J\\\"urgen Fassbender, Manfred Helm, Stefan Facsko, Xin Ou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-03-21T00:48:18Z","title":"Reverse epitaxy of Ge: ordered and facetted surface patterns"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.5133","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":"sha256:30fb31c722197314b0b2a42560170c4c145096d5ef176bd18ef02c199492c30c","target":"record","created_at":"2026-05-18T01:51:00Z","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":"2e5df661d943957aa8caed95a99cd8728dbed0cdc8b0d304ce09ab396d37912f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-03-21T00:48:18Z","title_canon_sha256":"013a007a9ca5ee5eb5dc828051d5ee42fd4a3c81004aac1c4501227b897784f6"},"schema_version":"1.0","source":{"id":"1303.5133","kind":"arxiv","version":1}},"canonical_sha256":"461a5576048233a4de7933ba3aefac952a0aebef2f4ba81f7091e3e546c0b63f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"461a5576048233a4de7933ba3aefac952a0aebef2f4ba81f7091e3e546c0b63f","first_computed_at":"2026-05-18T01:51:00.039137Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:00.039137Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nYcUihlQhLzLi3+X/ilXTQRrzOeszUUCUIZVw0iNgcSUqjr84Ojc5cE2xn4CfcAF+oG4jtpA/Rmu4Ndi4f1qAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:00.039623Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.5133","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:30fb31c722197314b0b2a42560170c4c145096d5ef176bd18ef02c199492c30c","sha256:2f5a4e4dda6af726984332d1f5537f3666afa4b3b0a1f3bfb44a5c76ac50db76"],"state_sha256":"a1d74c2082497b17c5c8efeb4cffc4a4b1967355116241ebac0a4ea7d6429b39"}