Magnetic ground state and transition of a quantum multiferroic LiCu2O2

被引：29

作者：

Huang, S. W. ^{[1
,2
]}

Huang, D. J. ^{[1
,2
,3
]}

Okamoto, J. ^{[1
]}

Mou, C. Y. ^{[3
,4
]}

Wu, W. B. ^{[1
]}

Yeh, K. W.

Chen, C. L.

Wu, M. K.

Hsu, H. C. ^{[5
,6
]}

Chou, F. C. ^{[1
,5
]}

Chen, C. T. ^{[1
]}

机构：

[1] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan

[2] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 30010, Taiwan

[3] Natl Chiao Tung Univ, Dept Phys, Hsinchu 30013, Taiwan

[4] Natl Ctr Theoret Sci, Div Phys, Hsnichu 30013, Taiwan

[5] Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 10617, Taiwan

[6] Natl Taiwan Normal Univ, Dept Phys, Taipei 11677, Taiwan

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.101.077205

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Based on resonant soft x-ray magnetic scattering, we report that LiCu2O2 exhibits a large interchain coupling which suppresses quantum fluctuations along spin chains, and a quasi-2D short-range magnetic order prevails at temperatures above the magnetic transition. These observations unravel the fact that the ground state of LiCu2O2 possesses long-range 2D-like incommensurate magnetic order rather than being a gapped spin liquid as expected from the nature of quantum spin-1/2 chains. In addition, the spin coupling along the c axis is found to be essential for inducing electric polarization.

引用

页数：4

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