{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:GHIKV25LR4V4DQN3JNX565IO3P","short_pith_number":"pith:GHIKV25L","canonical_record":{"source":{"id":"1111.0465","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-11-02T11:41:37Z","cross_cats_sorted":[],"title_canon_sha256":"2348edccebd987fc4bee94fafd28a0f9a82ee9dba81a7fbf7689c7761bdd0618","abstract_canon_sha256":"4ce503a3dbc4631006a970740c045bfc697fc8194e6babf027fe3a37d76320ab"},"schema_version":"1.0"},"canonical_sha256":"31d0aaebab8f2bc1c1bb4b6fdf750edbc1bc52c390ffe6dff507e1d15a322813","source":{"kind":"arxiv","id":"1111.0465","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.0465","created_at":"2026-05-18T04:04:53Z"},{"alias_kind":"arxiv_version","alias_value":"1111.0465v2","created_at":"2026-05-18T04:04:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.0465","created_at":"2026-05-18T04:04:53Z"},{"alias_kind":"pith_short_12","alias_value":"GHIKV25LR4V4","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"GHIKV25LR4V4DQN3","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"GHIKV25L","created_at":"2026-05-18T12:26:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:GHIKV25LR4V4DQN3JNX565IO3P","target":"record","payload":{"canonical_record":{"source":{"id":"1111.0465","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-11-02T11:41:37Z","cross_cats_sorted":[],"title_canon_sha256":"2348edccebd987fc4bee94fafd28a0f9a82ee9dba81a7fbf7689c7761bdd0618","abstract_canon_sha256":"4ce503a3dbc4631006a970740c045bfc697fc8194e6babf027fe3a37d76320ab"},"schema_version":"1.0"},"canonical_sha256":"31d0aaebab8f2bc1c1bb4b6fdf750edbc1bc52c390ffe6dff507e1d15a322813","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:04:53.063712Z","signature_b64":"SDVGnzWPCVI8NpLtzYhzx/8x7L9GoEUBmzRjAWppG0dnNMn0jI5anjzNeivh4wuC0FYVf37b0QxK+jF8H0RdBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"31d0aaebab8f2bc1c1bb4b6fdf750edbc1bc52c390ffe6dff507e1d15a322813","last_reissued_at":"2026-05-18T04:04:53.063045Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:04:53.063045Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1111.0465","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:04:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WRIZ/6M7SAI8kl8L47Yx8iGxcoEa5xvAVOA/Mix0pmYAXQ8EZyg7oN123t+U0GwEIUYelp+pwSXkvDIkBK4pBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T01:34:03.882375Z"},"content_sha256":"759eb2f7cc07fdc1a067da0586e0ffba4a84613b7419221c4b40ec7c205f0a99","schema_version":"1.0","event_id":"sha256:759eb2f7cc07fdc1a067da0586e0ffba4a84613b7419221c4b40ec7c205f0a99"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:GHIKV25LR4V4DQN3JNX565IO3P","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Strain enhanced electron cooling in a degenerately doped semiconductor","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. Dobbie, D. Gunnarsson, D. R. Leadley, E. H. C. Parker, J. S. Richardson-Bullock, J. T. Muhonen, M. J. Prest, M. Myronov, M. Prunnila, R. J. H. Morris, T. E. Whall, V. A. Shah","submitted_at":"2011-11-02T11:41:37Z","abstract_excerpt":"Enhanced electron cooling is demonstrated in a strained-silicon/superconductor tunnel junction refrigerator of volume 40 um^3. The electron temperature is reduced from 300 mK to 174 mK, with the enhancement over an unstrained silicon control (300 mK to 258 mK) being attributed to the smaller electron-phonon coupling in the strained case. Modeling and the resulting predictions of silicon-based cooler performance are presented. Further reductions in the minimum temperature are expected if the junction sub-gap leakage and tunnel resistance can be reduced. However, if only tunnel resistance is red"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.0465","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:04:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iLkiI1fdP50Ki8Mjzpt0GMpNflhdmf1O5HrwpHd/O8WAFBRFTrvFJKLqrDI7DJq5YVLF7oBC9EG7cUsnhhHnCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T01:34:03.883147Z"},"content_sha256":"ee890a94196a3e48fb67eabda05404d929d2827f95bc030335821c34e9f5d274","schema_version":"1.0","event_id":"sha256:ee890a94196a3e48fb67eabda05404d929d2827f95bc030335821c34e9f5d274"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GHIKV25LR4V4DQN3JNX565IO3P/bundle.json","state_url":"https://pith.science/pith/GHIKV25LR4V4DQN3JNX565IO3P/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GHIKV25LR4V4DQN3JNX565IO3P/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":"2026-05-27T01:34:03Z","links":{"resolver":"https://pith.science/pith/GHIKV25LR4V4DQN3JNX565IO3P","bundle":"https://pith.science/pith/GHIKV25LR4V4DQN3JNX565IO3P/bundle.json","state":"https://pith.science/pith/GHIKV25LR4V4DQN3JNX565IO3P/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GHIKV25LR4V4DQN3JNX565IO3P/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:GHIKV25LR4V4DQN3JNX565IO3P","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":"4ce503a3dbc4631006a970740c045bfc697fc8194e6babf027fe3a37d76320ab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-11-02T11:41:37Z","title_canon_sha256":"2348edccebd987fc4bee94fafd28a0f9a82ee9dba81a7fbf7689c7761bdd0618"},"schema_version":"1.0","source":{"id":"1111.0465","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.0465","created_at":"2026-05-18T04:04:53Z"},{"alias_kind":"arxiv_version","alias_value":"1111.0465v2","created_at":"2026-05-18T04:04:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.0465","created_at":"2026-05-18T04:04:53Z"},{"alias_kind":"pith_short_12","alias_value":"GHIKV25LR4V4","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"GHIKV25LR4V4DQN3","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"GHIKV25L","created_at":"2026-05-18T12:26:28Z"}],"graph_snapshots":[{"event_id":"sha256:ee890a94196a3e48fb67eabda05404d929d2827f95bc030335821c34e9f5d274","target":"graph","created_at":"2026-05-18T04:04:53Z","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":"Enhanced electron cooling is demonstrated in a strained-silicon/superconductor tunnel junction refrigerator of volume 40 um^3. The electron temperature is reduced from 300 mK to 174 mK, with the enhancement over an unstrained silicon control (300 mK to 258 mK) being attributed to the smaller electron-phonon coupling in the strained case. Modeling and the resulting predictions of silicon-based cooler performance are presented. Further reductions in the minimum temperature are expected if the junction sub-gap leakage and tunnel resistance can be reduced. However, if only tunnel resistance is red","authors_text":"A. Dobbie, D. Gunnarsson, D. R. Leadley, E. H. C. Parker, J. S. Richardson-Bullock, J. T. Muhonen, M. J. Prest, M. Myronov, M. Prunnila, R. J. H. Morris, T. E. Whall, V. A. Shah","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-11-02T11:41:37Z","title":"Strain enhanced electron cooling in a degenerately doped semiconductor"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.0465","kind":"arxiv","version":2},"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":"sha256:759eb2f7cc07fdc1a067da0586e0ffba4a84613b7419221c4b40ec7c205f0a99","target":"record","created_at":"2026-05-18T04:04:53Z","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":"4ce503a3dbc4631006a970740c045bfc697fc8194e6babf027fe3a37d76320ab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-11-02T11:41:37Z","title_canon_sha256":"2348edccebd987fc4bee94fafd28a0f9a82ee9dba81a7fbf7689c7761bdd0618"},"schema_version":"1.0","source":{"id":"1111.0465","kind":"arxiv","version":2}},"canonical_sha256":"31d0aaebab8f2bc1c1bb4b6fdf750edbc1bc52c390ffe6dff507e1d15a322813","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"31d0aaebab8f2bc1c1bb4b6fdf750edbc1bc52c390ffe6dff507e1d15a322813","first_computed_at":"2026-05-18T04:04:53.063045Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:04:53.063045Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SDVGnzWPCVI8NpLtzYhzx/8x7L9GoEUBmzRjAWppG0dnNMn0jI5anjzNeivh4wuC0FYVf37b0QxK+jF8H0RdBA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:04:53.063712Z","signed_message":"canonical_sha256_bytes"},"source_id":"1111.0465","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:759eb2f7cc07fdc1a067da0586e0ffba4a84613b7419221c4b40ec7c205f0a99","sha256:ee890a94196a3e48fb67eabda05404d929d2827f95bc030335821c34e9f5d274"],"state_sha256":"c8354af9e602d1cb8d8b4ad0833a228ed38bcf948877a471942ea836e03cfe90"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gqvco2DGbikepBJUcojymjznLFWy6kdRmDYDHfXZC3VGU/+1HG1xEyLe7Z3UW/0AE2CIvWVPzhp0pDRyHymMDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T01:34:03.887492Z","bundle_sha256":"997eb9ed4fdd2546c4d3cc70d72dd4968f400657d1b704e1ad6ce39359c26849"}}