{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:VG67PERRRPKEOQKRCNIELIQ52S","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":"a4de0b972c3be0ab859ea4c0fb9e9978efc2e4269abb88281fed8ee720eb855a","cross_cats_sorted":["cond-mat.dis-nn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-03-17T12:01:59Z","title_canon_sha256":"dff8c37ba615633f7274d4abd785271f28c71ddc8f5832c7a27d89a0b08c3345"},"schema_version":"1.0","source":{"id":"1003.3353","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1003.3353","created_at":"2026-05-18T04:39:08Z"},{"alias_kind":"arxiv_version","alias_value":"1003.3353v1","created_at":"2026-05-18T04:39:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1003.3353","created_at":"2026-05-18T04:39:08Z"},{"alias_kind":"pith_short_12","alias_value":"VG67PERRRPKE","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"VG67PERRRPKEOQKR","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"VG67PERR","created_at":"2026-05-18T12:26:15Z"}],"graph_snapshots":[{"event_id":"sha256:f98563194907d575d24d3ef0034717fb0ad1464d724b43ea53a9c48484affa71","target":"graph","created_at":"2026-05-18T04:39:08Z","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":"The origin of the anomalous, 400% increase of the piezoelectric coefficient in Sc$_x$Al$_{1-x}$N alloys is revealed. Quantum mechanical calculations show that the effect is intrinsic. It comes from a strong change in the response of the internal atomic coordinates to strain and pronounced softening of C$_{33}$ elastic constant. The underlying mechanism is the flattening of the energy landscape due to a competition between the parent wurtzite and the so far experimentally unknown hexagonal phases of the alloy. Our observation provides a route for the design of materials with high piezoelectric ","authors_text":"Bj\\\"orn Alling, Carina H\\\"oglund, Ferenc Tasn\\'adi, Gunilla Wingqvist, Igor A. Abrikosov, Jens Birch, Lars Hultman","cross_cats":["cond-mat.dis-nn"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-03-17T12:01:59Z","title":"Origin of the anomalous piezoelectric response in wurtzite Sc$_x$Al$_{1-x}$N alloys"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.3353","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:b200f063fda3e70133dd2a68f28708ad9ffbdc34b01aeca0a1ebd450a6d77ef5","target":"record","created_at":"2026-05-18T04:39:08Z","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":"a4de0b972c3be0ab859ea4c0fb9e9978efc2e4269abb88281fed8ee720eb855a","cross_cats_sorted":["cond-mat.dis-nn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-03-17T12:01:59Z","title_canon_sha256":"dff8c37ba615633f7274d4abd785271f28c71ddc8f5832c7a27d89a0b08c3345"},"schema_version":"1.0","source":{"id":"1003.3353","kind":"arxiv","version":1}},"canonical_sha256":"a9bdf792318bd4474151135045a21dd496f0dfc3609fe91653bf2a656a388316","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a9bdf792318bd4474151135045a21dd496f0dfc3609fe91653bf2a656a388316","first_computed_at":"2026-05-18T04:39:08.567800Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:39:08.567800Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lgA8V6Tbii3f2S/usdMGB+2DJ51fMwPa9zBh1V7+RZ3YgobFNS8Ot+6BCSYqFqK6vdTWnhHk37BnUxAk4/sjBA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:39:08.568336Z","signed_message":"canonical_sha256_bytes"},"source_id":"1003.3353","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b200f063fda3e70133dd2a68f28708ad9ffbdc34b01aeca0a1ebd450a6d77ef5","sha256:f98563194907d575d24d3ef0034717fb0ad1464d724b43ea53a9c48484affa71"],"state_sha256":"64f5c3edb5bfdfb38da5c23e6874b26db7471345cc8aba7daabe71eb9dad4788"}