{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:33UT7DR3UC7NYP4NV3NKEM4756","short_pith_number":"pith:33UT7DR3","canonical_record":{"source":{"id":"1903.00625","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-03-02T05:26:27Z","cross_cats_sorted":[],"title_canon_sha256":"3834ee0ba2e4b4bac31ee44d1bc92e29aefe40a3c1aca3b53465cf22a4d5631e","abstract_canon_sha256":"9bc8537bb52f096a714601b8c34204855cb0f74ee5e69bbda15bd8f15c30a4b4"},"schema_version":"1.0"},"canonical_sha256":"dee93f8e3ba0bedc3f8daedaa2339fefb844e7e50223e299ec35d596720559e1","source":{"kind":"arxiv","id":"1903.00625","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.00625","created_at":"2026-05-17T23:42:42Z"},{"alias_kind":"arxiv_version","alias_value":"1903.00625v2","created_at":"2026-05-17T23:42:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.00625","created_at":"2026-05-17T23:42:42Z"},{"alias_kind":"pith_short_12","alias_value":"33UT7DR3UC7N","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"33UT7DR3UC7NYP4N","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"33UT7DR3","created_at":"2026-05-18T12:33:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:33UT7DR3UC7NYP4NV3NKEM4756","target":"record","payload":{"canonical_record":{"source":{"id":"1903.00625","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-03-02T05:26:27Z","cross_cats_sorted":[],"title_canon_sha256":"3834ee0ba2e4b4bac31ee44d1bc92e29aefe40a3c1aca3b53465cf22a4d5631e","abstract_canon_sha256":"9bc8537bb52f096a714601b8c34204855cb0f74ee5e69bbda15bd8f15c30a4b4"},"schema_version":"1.0"},"canonical_sha256":"dee93f8e3ba0bedc3f8daedaa2339fefb844e7e50223e299ec35d596720559e1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:42.163433Z","signature_b64":"bzW4wmUujyYixB7632Gl5QZwIb3m8jLSnNT9JfZkym3F9VhKdbulw+Wqmyi2FE+YWOgz6N40QneLrFhhNtU+CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dee93f8e3ba0bedc3f8daedaa2339fefb844e7e50223e299ec35d596720559e1","last_reissued_at":"2026-05-17T23:42:42.162673Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:42.162673Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.00625","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":"2026-05-17T23:42:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"83wyCT0+3e42EqKZKhPFm+duM1wfy98D70erv3nZF7jlgaO+xR8z+sq5r0AGVdnUZZW0gE/qwljPewed0UTEDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:08:37.982706Z"},"content_sha256":"6d7294f8897a7eed2f7d0bc21a5c68b7dc85c12c7c39cd98dadb4e4e19bdc748","schema_version":"1.0","event_id":"sha256:6d7294f8897a7eed2f7d0bc21a5c68b7dc85c12c7c39cd98dadb4e4e19bdc748"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:33UT7DR3UC7NYP4NV3NKEM4756","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Topological Valley Currents in Bilayer Graphene/Hexagonal Boron Nitride Superlattices","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Daiju Tsuya, Eiichiro Watanabe, Katsuyoshi Komatsu, Kenji Watanabe, Kosuke Endo, Satoshi Moriyama, Takashi Taniguchi, Takuya Iwasaki, Yoshifumi Morita, Yutaka Noguchi, Yutaka Wakayama","submitted_at":"2019-03-02T05:26:27Z","abstract_excerpt":"Graphene superlattices have recently been attracting growing interest as an emergent class of quantum metamaterials. In this paper, we report the observation of nonlocal transport in bilayer graphene (BLG) superlattices encapsulated between two hexagonal boron nitride (hBN) layers, which formed hBN/BLG/hBN moir\\'e superlattices. We then employed these superlattices to detect a long-range charge-neutral valley current using an all-electrical method. The moir\\'e superlattice with broken inversion symmetry leads to a hot spot with Berry curvature accumulating at the charge neutral point (CNP), an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.00625","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":"2026-05-17T23:42:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LkHh2z5AOnSkaUOk/E4FUM1RKrJVnDiDzGaPm1PXkJ9AofWpu1fs8s3MVQfRhRnKNmRmJWe4fZ69flDPCRZwBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:08:37.983357Z"},"content_sha256":"89b53db5d9bc715fa2b9335b7a032b5e019a5181e02315b8ca804fa016f49dc0","schema_version":"1.0","event_id":"sha256:89b53db5d9bc715fa2b9335b7a032b5e019a5181e02315b8ca804fa016f49dc0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/33UT7DR3UC7NYP4NV3NKEM4756/bundle.json","state_url":"https://pith.science/pith/33UT7DR3UC7NYP4NV3NKEM4756/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/33UT7DR3UC7NYP4NV3NKEM4756/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":"2026-05-27T15:08:38Z","links":{"resolver":"https://pith.science/pith/33UT7DR3UC7NYP4NV3NKEM4756","bundle":"https://pith.science/pith/33UT7DR3UC7NYP4NV3NKEM4756/bundle.json","state":"https://pith.science/pith/33UT7DR3UC7NYP4NV3NKEM4756/state.json","well_known_bundle":"https://pith.science/.well-known/pith/33UT7DR3UC7NYP4NV3NKEM4756/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:33UT7DR3UC7NYP4NV3NKEM4756","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":"9bc8537bb52f096a714601b8c34204855cb0f74ee5e69bbda15bd8f15c30a4b4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-03-02T05:26:27Z","title_canon_sha256":"3834ee0ba2e4b4bac31ee44d1bc92e29aefe40a3c1aca3b53465cf22a4d5631e"},"schema_version":"1.0","source":{"id":"1903.00625","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.00625","created_at":"2026-05-17T23:42:42Z"},{"alias_kind":"arxiv_version","alias_value":"1903.00625v2","created_at":"2026-05-17T23:42:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.00625","created_at":"2026-05-17T23:42:42Z"},{"alias_kind":"pith_short_12","alias_value":"33UT7DR3UC7N","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"33UT7DR3UC7NYP4N","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"33UT7DR3","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:89b53db5d9bc715fa2b9335b7a032b5e019a5181e02315b8ca804fa016f49dc0","target":"graph","created_at":"2026-05-17T23:42:42Z","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":"Graphene superlattices have recently been attracting growing interest as an emergent class of quantum metamaterials. In this paper, we report the observation of nonlocal transport in bilayer graphene (BLG) superlattices encapsulated between two hexagonal boron nitride (hBN) layers, which formed hBN/BLG/hBN moir\\'e superlattices. We then employed these superlattices to detect a long-range charge-neutral valley current using an all-electrical method. The moir\\'e superlattice with broken inversion symmetry leads to a hot spot with Berry curvature accumulating at the charge neutral point (CNP), an","authors_text":"Daiju Tsuya, Eiichiro Watanabe, Katsuyoshi Komatsu, Kenji Watanabe, Kosuke Endo, Satoshi Moriyama, Takashi Taniguchi, Takuya Iwasaki, Yoshifumi Morita, Yutaka Noguchi, Yutaka Wakayama","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-03-02T05:26:27Z","title":"Topological Valley Currents in Bilayer Graphene/Hexagonal Boron Nitride Superlattices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.00625","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":"sha256:6d7294f8897a7eed2f7d0bc21a5c68b7dc85c12c7c39cd98dadb4e4e19bdc748","target":"record","created_at":"2026-05-17T23:42:42Z","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":"9bc8537bb52f096a714601b8c34204855cb0f74ee5e69bbda15bd8f15c30a4b4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-03-02T05:26:27Z","title_canon_sha256":"3834ee0ba2e4b4bac31ee44d1bc92e29aefe40a3c1aca3b53465cf22a4d5631e"},"schema_version":"1.0","source":{"id":"1903.00625","kind":"arxiv","version":2}},"canonical_sha256":"dee93f8e3ba0bedc3f8daedaa2339fefb844e7e50223e299ec35d596720559e1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dee93f8e3ba0bedc3f8daedaa2339fefb844e7e50223e299ec35d596720559e1","first_computed_at":"2026-05-17T23:42:42.162673Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:42.162673Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bzW4wmUujyYixB7632Gl5QZwIb3m8jLSnNT9JfZkym3F9VhKdbulw+Wqmyi2FE+YWOgz6N40QneLrFhhNtU+CA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:42.163433Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.00625","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6d7294f8897a7eed2f7d0bc21a5c68b7dc85c12c7c39cd98dadb4e4e19bdc748","sha256:89b53db5d9bc715fa2b9335b7a032b5e019a5181e02315b8ca804fa016f49dc0"],"state_sha256":"d4e9bcbc30512d1e189218342390ad2c00acc2a2e2e82630a48175bc4a2c533e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CCCsdp6Wj4nZ318Rk7aFVzQ3AjEbofxeHbkD6zxV/jKLKzXpzwetKCKEXQ7K/me5X0vT3QVLgOsrc8zTx+TXDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T15:08:38.006441Z","bundle_sha256":"6cbaf118f8070e396977159aa25043a83e94126bb71c5aabede8c7a988ea010c"}}