Synthesis and Physical Property of Triangular Lattice Antiferromagnet InFe2O4

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...

Heisenberg Antiferromagnet on a Triangular Lattice

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

Exact spectra, spin susceptibilities, and order parameter of the quantum Heisenberg antiferromagnet on the triangular lattice.

Exact spectra, spin susceptibilities and order parameter of the quantum Heisenberg antiferromagnet on the triangular lattice. Abstract Exact spectra of periodic samples are computed up to N = 36. Evidence of an extensive set of low lying levels, lower than the softest magnons, is exhibited. These low lying quantum states are degenerated in the thermodynamic limit; their symmetries and dynamics ...

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...