TY - JOUR
T1 - Cluster-Based Haldane State in an Edge-Shared Tetrahedral Spin-Cluster Chain
T2 - Fedotovite K2Cu3 O (SO4)3
AU - Fujihala, M.
AU - Sugimoto, T.
AU - Tohyama, T.
AU - Mitsuda, S.
AU - Mole, R. A.
AU - Yu, D. H.
AU - Yano, S.
AU - Inagaki, Y.
AU - Morodomi, H.
AU - Kawae, T.
AU - Sagayama, H.
AU - Kumai, R.
AU - Murakami, Y.
AU - Tomiyasu, K.
AU - Matsuo, A.
AU - Kindo, K.
N1 - Funding Information:
Travel expenses for the inelastic neutron scattering experiments performed using PELICAN at ANSTO, Australia, were supported by General User Program for Neutron Scattering Experiments, Institute for Solid State Physics, The University of Tokyo (Proposal No.16900), at JRR-3, Japan Atomic Energy Agency, Tokai, Japan. Synchrotron powder XRD measurements were performed with the approval of the Photon Factory Program Advisory Committee (Proposals No.2015P001 and No.2016G030). T.S. and T.T. were supported by Priority Issue (creation of new functional devices and high-performance materials to support next-generation industries) to be tackled by using Post K' Computer, MEXT, Japan. Numerical calculation in this work was carried out on the supercomputers at JAEA and the Supercomputer Center at Institute for Solid State Physics, University of Tokyo. This study is partly supported by the Grant-in-Aid for Scientific Research (Nos.17K14344, 16K17753, JP17H06137, and JP15H03692) from MEXT, Japan.
Funding Information:
Travel expenses for the inelastic neutron scattering experiments performed using PELICAN at ANSTO, Australia, were supported by General User Program for Neutron Scattering Experiments, Institute for Solid State Physics, The University of Tokyo (Proposal No. 16900), at JRR-3, Japan Atomic Energy Agency, Tokai, Japan. Synchrotron powder XRD measurements were performed with the approval of the Photon Factory Program Advisory Committee (Proposals No. 2015P001 and No. 2016G030). T. S. and T. T. were supported by Priority Issue (creation of new functional devices and high-performance materials to support next-generation industries) to be tackled by using Post ‘K’ Computer, MEXT, Japan. Numerical calculation in this work was carried out on the supercomputers at JAEA and the Supercomputer Center at Institute for Solid State Physics, University of Tokyo. This study is partly supported by the Grant-in-Aid for Scientific Research (Nos. 17K14344, 16K17753, JP17H06137, and JP15H03692) from MEXT, Japan.
Publisher Copyright:
© 2018 American Physical Society.
PY - 2018/2/12
Y1 - 2018/2/12
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.120.077201
DO - 10.1103/PhysRevLett.120.077201
M3 - Article
C2 - 29542973
AN - SCOPUS:85042168444
SN - 0031-9007
VL - 120
JO - Physical review letters
JF - Physical review letters
IS - 7
M1 - 077201
ER -