Topological spin liquid on the hyperkagome lattice of Na4Ir3O8

被引：92

作者：

Lawler, Michael J. ^{[1
]}

Kee, Hae-Young ^{[1
]}

Kim, Yong Baek ^{[1
]}

Vishwanath, Ashvin ^{[2
]}

机构：

[1] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

[2] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.100.227201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Recent experiments on the "hyperkagome" lattice system Na4Ir3O8 have demonstrated that it is a rare example of a three-dimensional spin-1/2 frustrated antiferromagnet. We investigate the role of quantum fluctuations as the primary mechanism lifting the macroscopic degeneracy inherited by classical spins on this lattice. In the semiclassical limit we predict, based on large-N calculations, that an unusual q=0 coplanar magnetically ordered ground state is stabilized with no local zero modes that correspond to local deformations of the spin configurations. This phase melts in the quantum limit and a gapped topological Z(2) spin liquid phase emerges. In the vicinity of this quantum phase transition, we study the dynamic spin structure factor and comment on the relevance of our results for future neutron scattering experiments.

引用

页数：4

共 19 条

[1]

Auerbach A., 1994, INTERACTING ELECT QU

[2] HIDDEN ORDER IN A FRUSTRATED SYSTEM - PROPERTIES OF THE HEISENBERG KAGOME ANTIFERROMAGNET [J].

CHALKER, JT ;

HOLDSWORTH, PCW ;

SHENDER, EF .

PHYSICAL REVIEW LETTERS, 1992, 68 (06) :855-858

[3] Large-N solutions of the Heisenberg and Hubbard-Heisenberg models on the anisotropic triangular lattice:: application to Cs2CuCl4 and to the layered organic superconductors κ-(BEDT-TTF)2X (BEDT-TTF bis(ethylene-dithio)tetrathiafulvalene); X anion) [J].

Chung, CH ;

Marston, JB ;

McKenzie, RH .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2001, 13 (22) :5159-5181

[4] Spin dynamics of the spin-1/2 Kagome lattice antiferromagnet ZnCu3(OH)6Cl2 [J].

Helton, J. S. ;

Matan, K. ;

Shores, M. P. ;

Nytko, E. A. ;

Bartlett, B. M. ;

Yoshida, Y. ;

Takano, Y. ;

Suslov, A. ;

Qiu, Y. ;

Chung, J. -H. ;

Nocera, D. G. ;

Lee, Y. S. .

PHYSICAL REVIEW LETTERS, 2007, 98 (10)

[5] Spin-1/2 kagome-like lattice in Volborthite Cu3V2O7(OH)2•2H2O [J].

Hiroi, Z ;

Hanawa, M ;

Kobayashi, N ;

Nohara, M ;

Takagi, H ;

Kato, Y ;

Takigawa, M .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2001, 70 (11) :3377-3384

[6] Classical antiferromagnet on a hyperkagome lattice [J].

Hopkinson, John M. ;

Isakov, Sergei V. ;

Kee, Hae-Young ;

Kim, Yong Baek .

PHYSICAL REVIEW LETTERS, 2007, 99 (03)

[7] INTRODUCTION TO LATTICE GAUGE-THEORY AND SPIN SYSTEMS [J].

KOGUT, JB .

REVIEWS OF MODERN PHYSICS, 1979, 51 (04) :659-713

[8]

LAWLER MJ, IN PRESS

[9]

Lhuillier C, 2001, LECT NOTES PHYS, V595, P161

[10]

Moessner R, 2001, CAN J PHYS, V79, P1283, DOI 10.1139/cjp-79-11/12-1283

← 1 2 →