Experimental realization of a 2D fractional quantum spin liquid.
作者： R. Coldea , D. A. Tennant , A. M. Tsvelik , Z. Tylczynski
DOI: 10.1103/PHYSREVLETT.86.1335
关键词:
摘要: The ground-state ordering and dynamics of the two-dimensional S = 1/2 frustrated Heisenberg antiferromagnet Cs(2)CuCl(4) are explored using neutron scattering in high magnetic fields. We find that dynamic correlations show a highly dispersive continuum excited states, characteristic resonating valence bond state, arising from pairs spinons. Quantum renormalization factors for excitation energies (1.65) incommensuration (0.56) large.
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