Electromagnon excitation in the triangular lattice antiferromagnet CuFeO2

Successive Phase Transitions and Extended Spin - Excitation Continuum in the S 1⁄4 12 Triangular - Lattice Antiferromagnet

Triangular-Lattice Antiferromagnet Ba3CoSb2O9 H.D. Zhou,* Cenke Xu, A.M. Hallas, H. J. Silverstein, C. R. Wiebe, I. Umegaki, J. Q. Yan, T. P. Murphy, J.-H. Park, Y. Qiu, J. R.D. Copley, J. S. Gardner, and Y. Takano Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200, USA National High Magnetic Field Laboratory, Florida State University, Tallahassee, Flo...

Heisenberg Antiferromagnet on a Triangular Lattice

Charge and Magnetic Orderings in Triangular Lattice Antiferromagnet InFe2O4

InFe2O4 belongs to the RFe2O4 family where R is trivalent cation (R = In, Yb, Lu, Er, or Y). In the rhombohedral crystal structure of this compound as shown in Fig. 1, the double layers of FeO5 bipyramids make two-dimensional triangular lattices and are separated by RO6 octahedra. Since the numbers of Fe and Fe ions are equal in the triangular lattice, the coexistence of charge and magnetic fru...

A Spin-Polaron Technique Utilized on Triangular-Lattice Antiferromagnet

By expressing the Holstein-Primakoff transformation in a symmetric form a modified spin-polaron technique utilized on triangular-lattice antiferromagnet is developed. With the technique, we have treated an extended t-J model, calculated the quasiparticle dispersion, and we also compared the the dispersion with that obtained by other method. PACS: 74.20.-z, 71.27.+a, 75.30.Gw

0 Is There A Phase Transition in the Isotropic Heisenberg Antiferromagnet on the Triangular Lattice ?

The phase diagram of the classical anisotropic (XXZ) Heisenberg model on the 2-dimensional triangular lattice is investigated using Monte Carlo methods. In the easy-axis limit, two finite temperature vortex unbinding transitions have been observed. In the easy-plane limit, there also appear to be two distinct finite temperature phase transitions which are very close in temperature. The upper tr...