Experimental realization of a 2D fractional quantum spin liquid

被引：351

作者：

Coldea, R ^{[1
]}

Tennant, DA

Tsvelik, AM

Tylczynski, Z

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[2] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

[3] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England

[4] Univ Oxford, Dept Theoret Phys, Oxford OX1 3NP, England

[5] Adam Mickiewicz Univ, Inst Phys, PL-61614 Poznan, Poland

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.86.1335

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ground-state ordering and dynamics of the two-dimensional S = 1/2 frustrated Heisenberg antiferromagnet Cs2CuCl4 are explored using neutron scattering in high magnetic fields. We find that the dynamic correlations show a highly dispersive continuum of excited states, characteristic of the resonating valence bond state, arising from pairs of S = 1/2 spinons. Quantum renormalization factors for the excitation energies (1.65) and incommensuration (0.56) are large.

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页码：1335 / 1338

页数：4

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