CPM Seminar

Ground states of a spin-1/2 triangular antiferromagnet in a magnetic field

Martin Veillette

Oxford

In frustrated magnets, spins must decide between a large number of degenerate ground states. The large manifold of accessible ground states can prevent the development of magnetic order and/or lead to unusual thermodynamic phases that can relieve the frustration. Cs₂CuCl₄ is such a material where the spins S=1/2 living on a triangular lattice generate large quantum fluctuations. In this talk, I will take the large S route to explore the various phases of Cs₂CuCl₄ and reveal its static and dynamic properties. Extensive comparisons with available experimental data will be made.