Quantum Selection of Order in an XXZ Antiferromagnet on a Kagome Lattice

Selection of the ground state of the kagome-lattice $XXZ$ antiferromagnet by quantum fluctuations is investigated by combining nonlinear spin-wave and real-space perturbation theories. The two methods unanimously favor $\mathbf{q}=0$ over $\sqrt{3}\ifmmode\times\else\texttimes\fi{}\sqrt{3}$ magnetic... View More