Spinon deconfinement and re-confinement in the 2D Heisenberg antiferromagnet Ba2Cu3O4Cl2
The Heisenberg antiferromagnet is a well-known model used to describe the magnetic properties of layered and metal-organic Mott insulators which have been explored both experimentally and theoretically. Recent interest has focused on the static and dynamic studies of CFTD – an almost ideal realisation of a 2D Heisenberg antiferromagnet (AFM) on a square lattice. The excitation spectrum of this system was understood in terms of unbinding of spin-waves into spinon pairs at Q = (pi, 0) position. In this proposal we aim to investigate the inelastic spectrum of a closely related Ba2342 spin-1/2 square-lattice framework which consists of coupled AFM spin-systems as a testing ground of the new theoretical model.
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BABKEVICH Peter; N. B. Christensen; ENDERLE Mechthild; IVANOV Alexandre; MOURIGAL Martin; REGNAULT Louis Pierre and Henrik M. Ronnow. (2015). Spinon deconfinement and re-confinement in the 2D Heisenberg antiferromagnet Ba2Cu3O4Cl2. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1468
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