2017/09/26 by Masayoshi Fujihala, M. Fujihala, T. Sugimoto +28
Chemistry · Physics and Astronomy · #Advanced Condensed Matter Physics #Algorithm #Atomic physics #Chemistry #Cluster (spacecraft) #Computer science #Condensed matter physics #Crystallography #Enhanced Data Rates for GSM Evolution #Ground state #Inelastic neutron scattering #Neutron scattering #Physics #Physics of Superconductivity and Magnetism #Quantum many-body systems #Quantum mechanics #Scattering #Spin (aerodynamics) #State (computer science) #Tetrahedron #Thermodynamics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.120.077201
published as Phys. Rev. Lett. 120, 077201 (2018)
openalex created_date 2017/09/25 · arxiv created 2017/09/26 · openalex publication_date 2018/02/12 · arxiv updated 2018/02/21 · openalex updated_date 2026/08/05
Fedotovite K2Cu3O(SO4)3 is a candidate of new quantum spin systems, in which the edge-shared tetrahedral (EST) spin clusters consisting of Cu2+ are connected by weak intercluster couplings forming a one-dimensional array. Comprehensive experimental studies by magnetic susceptibility, magnetization, heat capacity, and inelastic neutron scattering measurements reveal the presence of an effective S=1 Haldane state below T≅4 K. Rigorous theoretical studies provide an insight into the magnetic state of K2Cu3O(SO4)3: an EST cluster makes a triplet in the ground state and a one-dimensional chain of the EST induces a cluster-based Haldane state. We predict that the cluster-based Haldane state emerges whenever the number of tetrahedra in the EST is even.