{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:C2GRCJLHC6OMFLQ33JLGDA7KBL","short_pith_number":"pith:C2GRCJLH","canonical_record":{"source":{"id":"cond-mat/0308618","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2003-08-29T10:38:21Z","cross_cats_sorted":[],"title_canon_sha256":"113280346293c472a2f52a4fe44e3936f0bf30463a584d34bf8ce34148e8345a","abstract_canon_sha256":"acc123ee6cc8dc17992777314b96ee96e83ed6e210e9f9048fe5de92fdb4f941"},"schema_version":"1.0"},"canonical_sha256":"168d112567179cc2ae1bda566183ea0ae4d4b1889cdf18bf7b5df175054ffaa0","source":{"kind":"arxiv","id":"cond-mat/0308618","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0308618","created_at":"2026-07-04T16:39:22Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0308618v1","created_at":"2026-07-04T16:39:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0308618","created_at":"2026-07-04T16:39:22Z"},{"alias_kind":"pith_short_12","alias_value":"C2GRCJLHC6OM","created_at":"2026-07-04T16:39:22Z"},{"alias_kind":"pith_short_16","alias_value":"C2GRCJLHC6OMFLQ3","created_at":"2026-07-04T16:39:22Z"},{"alias_kind":"pith_short_8","alias_value":"C2GRCJLH","created_at":"2026-07-04T16:39:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:C2GRCJLHC6OMFLQ33JLGDA7KBL","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0308618","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2003-08-29T10:38:21Z","cross_cats_sorted":[],"title_canon_sha256":"113280346293c472a2f52a4fe44e3936f0bf30463a584d34bf8ce34148e8345a","abstract_canon_sha256":"acc123ee6cc8dc17992777314b96ee96e83ed6e210e9f9048fe5de92fdb4f941"},"schema_version":"1.0"},"canonical_sha256":"168d112567179cc2ae1bda566183ea0ae4d4b1889cdf18bf7b5df175054ffaa0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:39:22.632729Z","signature_b64":"urGN/PFzy6GOZnqwGyeC/64CjstMzMzZ8UKnbgpLjN+fZ62YTUNd7VkQMo2cs+bG/lQC9IN8e/jFB45k3/hRAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"168d112567179cc2ae1bda566183ea0ae4d4b1889cdf18bf7b5df175054ffaa0","last_reissued_at":"2026-07-04T16:39:22.632387Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:39:22.632387Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0308618","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T16:39:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YujDMKK06MlNXgOPT73gSexJuMl35hezx+Is5y7/hQRzI6+i2QuBXuM+6lzX8PS9QFHcRrRAtL938WhR0qZ7Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T05:01:17.345754Z"},"content_sha256":"c639d514d10dff78a8558bc32581f5d806797eda038ddcc7d006789092949bb4","schema_version":"1.0","event_id":"sha256:c639d514d10dff78a8558bc32581f5d806797eda038ddcc7d006789092949bb4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:C2GRCJLHC6OMFLQ33JLGDA7KBL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhancement of the Curie temperature in GaMnAs/InGaMnAs superlattices","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Koeder, A. Waag, K. Zuern, P. Ziemann, R. Sauer, S. Frank, V. Avrutin, W. Limmer, W. Schoch","submitted_at":"2003-08-29T10:38:21Z","abstract_excerpt":"We report on an enhancement of the Curie temperature in GaMnAs/InGaMnAs superlattices grown by low-temperature molecular beam epitaxy, which is due to thin InGaMnAs or InGaAs films embedded into the GaMnAs layers. The pronounced increase of the Curie temperature is strongly correlated to the In concentration in the embedded layers. Curie temperatures up to 110 K are observed in such structures compared to 60 K in GaMnAs single layers grown under the same conditions. A further increase in T$_C$ up to 130 K can be achieved using post-growth annealing at temperatures near the growth temperature. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0308618","kind":"arxiv","version":1},"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/cond-mat/0308618/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":"2026-07-04T16:39:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iT/TnccDxoICipnQ+OEKHrWA98dlwrRjkco+mPvPmNi4LPuQob1pujVEWVJuXY+4vvIkGaLt1yr0T+JUX/6tBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T05:01:17.346686Z"},"content_sha256":"644264d982e03fb5d5cd997deeeada1e99929f7c53bba8169a10d7a13bb9e1e0","schema_version":"1.0","event_id":"sha256:644264d982e03fb5d5cd997deeeada1e99929f7c53bba8169a10d7a13bb9e1e0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C2GRCJLHC6OMFLQ33JLGDA7KBL/bundle.json","state_url":"https://pith.science/pith/C2GRCJLHC6OMFLQ33JLGDA7KBL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C2GRCJLHC6OMFLQ33JLGDA7KBL/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":"2026-08-05T05:01:17Z","links":{"resolver":"https://pith.science/pith/C2GRCJLHC6OMFLQ33JLGDA7KBL","bundle":"https://pith.science/pith/C2GRCJLHC6OMFLQ33JLGDA7KBL/bundle.json","state":"https://pith.science/pith/C2GRCJLHC6OMFLQ33JLGDA7KBL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C2GRCJLHC6OMFLQ33JLGDA7KBL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:C2GRCJLHC6OMFLQ33JLGDA7KBL","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":"acc123ee6cc8dc17992777314b96ee96e83ed6e210e9f9048fe5de92fdb4f941","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2003-08-29T10:38:21Z","title_canon_sha256":"113280346293c472a2f52a4fe44e3936f0bf30463a584d34bf8ce34148e8345a"},"schema_version":"1.0","source":{"id":"cond-mat/0308618","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0308618","created_at":"2026-07-04T16:39:22Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0308618v1","created_at":"2026-07-04T16:39:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0308618","created_at":"2026-07-04T16:39:22Z"},{"alias_kind":"pith_short_12","alias_value":"C2GRCJLHC6OM","created_at":"2026-07-04T16:39:22Z"},{"alias_kind":"pith_short_16","alias_value":"C2GRCJLHC6OMFLQ3","created_at":"2026-07-04T16:39:22Z"},{"alias_kind":"pith_short_8","alias_value":"C2GRCJLH","created_at":"2026-07-04T16:39:22Z"}],"graph_snapshots":[{"event_id":"sha256:644264d982e03fb5d5cd997deeeada1e99929f7c53bba8169a10d7a13bb9e1e0","target":"graph","created_at":"2026-07-04T16:39:22Z","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/cond-mat/0308618/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on an enhancement of the Curie temperature in GaMnAs/InGaMnAs superlattices grown by low-temperature molecular beam epitaxy, which is due to thin InGaMnAs or InGaAs films embedded into the GaMnAs layers. The pronounced increase of the Curie temperature is strongly correlated to the In concentration in the embedded layers. Curie temperatures up to 110 K are observed in such structures compared to 60 K in GaMnAs single layers grown under the same conditions. A further increase in T$_C$ up to 130 K can be achieved using post-growth annealing at temperatures near the growth temperature. ","authors_text":"A. Koeder, A. Waag, K. Zuern, P. Ziemann, R. Sauer, S. Frank, V. Avrutin, W. Limmer, W. Schoch","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2003-08-29T10:38:21Z","title":"Enhancement of the Curie temperature in GaMnAs/InGaMnAs superlattices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0308618","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:c639d514d10dff78a8558bc32581f5d806797eda038ddcc7d006789092949bb4","target":"record","created_at":"2026-07-04T16:39:22Z","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":"acc123ee6cc8dc17992777314b96ee96e83ed6e210e9f9048fe5de92fdb4f941","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2003-08-29T10:38:21Z","title_canon_sha256":"113280346293c472a2f52a4fe44e3936f0bf30463a584d34bf8ce34148e8345a"},"schema_version":"1.0","source":{"id":"cond-mat/0308618","kind":"arxiv","version":1}},"canonical_sha256":"168d112567179cc2ae1bda566183ea0ae4d4b1889cdf18bf7b5df175054ffaa0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"168d112567179cc2ae1bda566183ea0ae4d4b1889cdf18bf7b5df175054ffaa0","first_computed_at":"2026-07-04T16:39:22.632387Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:39:22.632387Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"urGN/PFzy6GOZnqwGyeC/64CjstMzMzZ8UKnbgpLjN+fZ62YTUNd7VkQMo2cs+bG/lQC9IN8e/jFB45k3/hRAg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:39:22.632729Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0308618","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c639d514d10dff78a8558bc32581f5d806797eda038ddcc7d006789092949bb4","sha256:644264d982e03fb5d5cd997deeeada1e99929f7c53bba8169a10d7a13bb9e1e0"],"state_sha256":"420a9864887e9d65d5d6ae0197eb0363a4e9d468b5dcf8a7317fb9782c6f5479"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5QQ1K6LXkgia7amA5g5ufh/k1jx7ra4449kKuiMX6BveG8F1mglxdKo4+Rho4nKZvxj75lPF5jDbjOdN7KgbDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T05:01:17.352486Z","bundle_sha256":"43f2d2d3bc402ab6a130deff597001ba24795dfa258a885303ee0716a3a3d412"}}