{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:4666HEHTTK2JSCAFROAP4CEFAZ","short_pith_number":"pith:4666HEHT","canonical_record":{"source":{"id":"1001.4612","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-01-26T09:02:33Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"de54fef9eb743e0be046c276e1611cd75dab38d75a9c3f28960ea0efe0f95e7e","abstract_canon_sha256":"f6998fe95dc3dfa1f80a077528dada62fb26766d2eb778908ee362527fcf74e5"},"schema_version":"1.0"},"canonical_sha256":"e7bde390f39ab49908058b80fe08850649ac04474b34add05964a6be77f202ea","source":{"kind":"arxiv","id":"1001.4612","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.4612","created_at":"2026-05-18T02:09:29Z"},{"alias_kind":"arxiv_version","alias_value":"1001.4612v1","created_at":"2026-05-18T02:09:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.4612","created_at":"2026-05-18T02:09:29Z"},{"alias_kind":"pith_short_12","alias_value":"4666HEHTTK2J","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"4666HEHTTK2JSCAF","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"4666HEHT","created_at":"2026-05-18T12:26:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:4666HEHTTK2JSCAFROAP4CEFAZ","target":"record","payload":{"canonical_record":{"source":{"id":"1001.4612","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-01-26T09:02:33Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"de54fef9eb743e0be046c276e1611cd75dab38d75a9c3f28960ea0efe0f95e7e","abstract_canon_sha256":"f6998fe95dc3dfa1f80a077528dada62fb26766d2eb778908ee362527fcf74e5"},"schema_version":"1.0"},"canonical_sha256":"e7bde390f39ab49908058b80fe08850649ac04474b34add05964a6be77f202ea","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:09:29.910378Z","signature_b64":"P6EsS+EUrQNGMY3TjGtxeuhTzo3Hs67yeXcxEnqkQqAjnsT7a137eWJ9SV8tfi989eh0qUzrONg3E1MIO2oTDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e7bde390f39ab49908058b80fe08850649ac04474b34add05964a6be77f202ea","last_reissued_at":"2026-05-18T02:09:29.909618Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:09:29.909618Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1001.4612","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":"2026-05-18T02:09:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DIJE5KyKI1hVvK7LnTCnbVvOSRTTMCuxztUzonqCMiT6ZNBy9hYJcSaY82M1q6lF5lMKMtpcUH9ruL7HQg9OAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T13:11:32.687027Z"},"content_sha256":"a33e8611a9c26860ad1ae5f66f77f7dc93dcc808c032cedc039095de58248190","schema_version":"1.0","event_id":"sha256:a33e8611a9c26860ad1ae5f66f77f7dc93dcc808c032cedc039095de58248190"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:4666HEHTTK2JSCAFROAP4CEFAZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Damping in high-frequency metallic nanomechanical resonators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"F. Hoehne, J. S. Tsai, L. B. Ioffe, L. Faoro, O. Astafiev, Y. Nakamura, Yu. A. Pashkin","submitted_at":"2010-01-26T09:02:33Z","abstract_excerpt":"We have studied damping in polycrystalline Al nanomechanical resonators by measuring the temperature dependence of their resonance frequency and quality factor over a temperature range of 0.1 - 4 K. Two regimes are clearly distinguished with a crossover temperature of 1 K. Below 1 K we observe a logarithmic temperature dependence of the frequency and linear dependence of damping that cannot be explained by the existing standard models. We attribute these phenomena to the effect of the two-level systems characterized by the unexpectedly long (at least two orders of magnitude longer) relaxation "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.4612","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":""},"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":"2026-05-18T02:09:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wW87sKt5SEFyM2VxYsIqhD+TvIJKClO//28pdfDqqIgqWZ8DLNYCWeNDCpyRnMdjx2Z/8wzqgN5obyJZ+gyxBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T13:11:32.687617Z"},"content_sha256":"c71aaaa9ad934feabdeb895c039b616a05889eb22e6eb447aaede350b799bc6c","schema_version":"1.0","event_id":"sha256:c71aaaa9ad934feabdeb895c039b616a05889eb22e6eb447aaede350b799bc6c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4666HEHTTK2JSCAFROAP4CEFAZ/bundle.json","state_url":"https://pith.science/pith/4666HEHTTK2JSCAFROAP4CEFAZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4666HEHTTK2JSCAFROAP4CEFAZ/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":"2026-05-26T13:11:32Z","links":{"resolver":"https://pith.science/pith/4666HEHTTK2JSCAFROAP4CEFAZ","bundle":"https://pith.science/pith/4666HEHTTK2JSCAFROAP4CEFAZ/bundle.json","state":"https://pith.science/pith/4666HEHTTK2JSCAFROAP4CEFAZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4666HEHTTK2JSCAFROAP4CEFAZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:4666HEHTTK2JSCAFROAP4CEFAZ","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":"f6998fe95dc3dfa1f80a077528dada62fb26766d2eb778908ee362527fcf74e5","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-01-26T09:02:33Z","title_canon_sha256":"de54fef9eb743e0be046c276e1611cd75dab38d75a9c3f28960ea0efe0f95e7e"},"schema_version":"1.0","source":{"id":"1001.4612","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.4612","created_at":"2026-05-18T02:09:29Z"},{"alias_kind":"arxiv_version","alias_value":"1001.4612v1","created_at":"2026-05-18T02:09:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.4612","created_at":"2026-05-18T02:09:29Z"},{"alias_kind":"pith_short_12","alias_value":"4666HEHTTK2J","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"4666HEHTTK2JSCAF","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"4666HEHT","created_at":"2026-05-18T12:26:03Z"}],"graph_snapshots":[{"event_id":"sha256:c71aaaa9ad934feabdeb895c039b616a05889eb22e6eb447aaede350b799bc6c","target":"graph","created_at":"2026-05-18T02:09:29Z","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":"We have studied damping in polycrystalline Al nanomechanical resonators by measuring the temperature dependence of their resonance frequency and quality factor over a temperature range of 0.1 - 4 K. Two regimes are clearly distinguished with a crossover temperature of 1 K. Below 1 K we observe a logarithmic temperature dependence of the frequency and linear dependence of damping that cannot be explained by the existing standard models. We attribute these phenomena to the effect of the two-level systems characterized by the unexpectedly long (at least two orders of magnitude longer) relaxation ","authors_text":"F. Hoehne, J. S. Tsai, L. B. Ioffe, L. Faoro, O. Astafiev, Y. Nakamura, Yu. A. Pashkin","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-01-26T09:02:33Z","title":"Damping in high-frequency metallic nanomechanical resonators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.4612","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:a33e8611a9c26860ad1ae5f66f77f7dc93dcc808c032cedc039095de58248190","target":"record","created_at":"2026-05-18T02:09:29Z","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":"f6998fe95dc3dfa1f80a077528dada62fb26766d2eb778908ee362527fcf74e5","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-01-26T09:02:33Z","title_canon_sha256":"de54fef9eb743e0be046c276e1611cd75dab38d75a9c3f28960ea0efe0f95e7e"},"schema_version":"1.0","source":{"id":"1001.4612","kind":"arxiv","version":1}},"canonical_sha256":"e7bde390f39ab49908058b80fe08850649ac04474b34add05964a6be77f202ea","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e7bde390f39ab49908058b80fe08850649ac04474b34add05964a6be77f202ea","first_computed_at":"2026-05-18T02:09:29.909618Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:09:29.909618Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P6EsS+EUrQNGMY3TjGtxeuhTzo3Hs67yeXcxEnqkQqAjnsT7a137eWJ9SV8tfi989eh0qUzrONg3E1MIO2oTDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:09:29.910378Z","signed_message":"canonical_sha256_bytes"},"source_id":"1001.4612","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a33e8611a9c26860ad1ae5f66f77f7dc93dcc808c032cedc039095de58248190","sha256:c71aaaa9ad934feabdeb895c039b616a05889eb22e6eb447aaede350b799bc6c"],"state_sha256":"1353ebe853d0e58d5b31331d962c084f8c06da381836f67a27a8f9341ca5921c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RVwxGL2i0mao2sW+gOd4goEOPs9kk2XzOHtZjpqUVPtDqGseQJZSfHO+v83SvA7d3MZCltt3A4jcs4ahzVkNAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T13:11:32.690950Z","bundle_sha256":"3487b9d6a7240eda62e596f3ef332908b0ddb1f6618acdbcc50ddf552aab4760"}}