2000/07/31 by R. Coldea, D. M. Tennant, D. A. Tennant +3 · 4 citations
Mathematics · Physics and Astronomy · #Advanced Condensed Matter Physics #Algebraic structures and combinatorial models #Physics of Superconductivity and Magnetism #cond-mat.stat-mech #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.86.1335
published as Phys. Rev. Lett. 86, 1335 (2001) · 4 pages revtex, 3 ps figures, new data added to fig. 1f, includes referees' comments
arxiv created 2001/01/04 · openalex publication_date 2001/02/12 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The ground-state ordering and dynamics of the two-dimensional S\phantom\rule0ex0ex=\phantom\rule0ex0ex1/2 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\phantom\rule0ex0ex=\phantom\rule0ex0ex1/2 spinons. Quantum renormalization factors for the excitation energies (1.65) and incommensuration (0.56) are large.