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The magnetic excitations at low temperatures are similar to those of the interacting spin-1/2 tetramers in the ordered state. The weak excitations existing above 3 meV suggest that the Higgs mode appears in Cu$_2$CdB$_2$O$_6$ at ambient pressure and zero magnetic field. We evaluated $J_1 = 27.3 \\pm 1.0$ and $J_2 = -14.0 \\pm 1.4$ meV for the intra-tetramer interactions and $J_3 = -0.4 \\pm 0.2$ and $J_4 = 1.4 \\pm 0.2$ meV for the inter-tetramer interactions. The spin gap in the isolated spin tetram"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1509.01334","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-09-04T03:11:14Z","cross_cats_sorted":[],"title_canon_sha256":"2bc1cca2239b63e0562d2abf5ada0b172638cc950065c33fae65c6303f77032f","abstract_canon_sha256":"d54a8c19e65d6f33aa96f520fbd2fc7175bf809ce779c58eb0c8897af57fe1bb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:24:52.668693Z","signature_b64":"nVi69MNywMeaP5WIUIkj0411FU2WMKNp9/L3Jsd+U409hiaSoxuaq7IWxiQ1tdGebH2FL/yWzDXllqgHD7G9DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a0f7ef38387f5d9328e545ce50c703bf8191d64228cb1cce46a90f5978af0a1b","last_reissued_at":"2026-05-18T01:24:52.667965Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:24:52.667965Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Magnetic excitations of the spin-1/2 tetramer substance Cu$_2$$^{114}$Cd$^{11}$B$_2$O$_6$ obtained by inelastic neutron scattering experiments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Kenji Nakajima, Masashige Matsumoto, Masashi Hase, Seiko Ohira-Kawamura, Tatsuya Kikuchi, Yukinobu Kawakita","submitted_at":"2015-09-04T03:11:14Z","abstract_excerpt":"We performed inelastic neutron scattering experiments on Cu$_2$$^{114}$Cd$^{11}$B$_2$O$_6$ powder. The magnetic excitations at low temperatures are similar to those of the interacting spin-1/2 tetramers in the ordered state. The weak excitations existing above 3 meV suggest that the Higgs mode appears in Cu$_2$CdB$_2$O$_6$ at ambient pressure and zero magnetic field. We evaluated $J_1 = 27.3 \\pm 1.0$ and $J_2 = -14.0 \\pm 1.4$ meV for the intra-tetramer interactions and $J_3 = -0.4 \\pm 0.2$ and $J_4 = 1.4 \\pm 0.2$ meV for the inter-tetramer interactions. 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