Cluster-Based Haldane State in an Edge-Shared Tetrahedral Spin-Cluster Chain: Fedotovite K2Cu3O(SO4)3

被引：28

作者：

Fujihala, M. ^{[1
]}

Sugimoto, T. ^{[2
]}

Tohyama, T. ^{[2
]}

Mitsuda, S. ^{[1
]}

Mole, R. A. ^{[3
]}

Yu, D. H. ^{[3
]}

Yano, S. ^{[4
]}

Inagaki, Y. ^{[5
]}

Morodomi, H. ^{[5
]}

Kawae, T. ^{[5
]}

Sagayama, H. ^{[6
]}

Kumai, R. ^{[6
]}

Murakami, Y. ^{[6
]}

Tomiyasu, K. ^{[7
]}

Matsuo, A. ^{[8
]}

Kindo, K. ^{[8
]}

机构：

[1] Tokyo Univ Sci, Fac Sci, Dept Phys, Shinjuku Ku, Tokyo 1628601, Japan

[2] Tokyo Univ Sci, Fac Sci, Dept Appl Phys, Tokyo 1258585, Japan

[3] Australian Nucl Sci & Technol Org, Lucas Heights, NSW 2232, Australia

[4] Natl Synchrotron Radiat Res Ctr, Neutron Grp, Hsinchu 30077, Taiwan

[5] Kyushu Univ, Fac Engn, Dept Appl Quantum Phys, Fukuoka 8190395, Japan

[6] High Energy Accelerator Res Org, Inst Mat Struct Sci, Tsukuba, Ibaraki 3050801, Japan

[7] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[8] Univ Tokyo, Inst Solid State Phys, Int MegaGauss Sci Lab, Kashiwa, Chiba 2778581, Japan

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 120卷 / 07期

关键词：

GAP;

D O I：

10.1103/PhysRevLett.120.077201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 congruent to 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.

引用

页数：5

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