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15 papers · 2 filters
Interacting anyons in topological quantum liquids: The golden chain
Adrian Feiguin, Simon Trebst, Andreas W. W. Ludwig +4
We discuss generalizations of quantum spin Hamiltonians using anyonic degrees of freedom. The simplest model for interacting anyons energetically favors neighboring anyons to fuse…
Order by disorder and spiral spin liquid in frustrated diamond lattice antiferromagnets
Doron Bergman, Jason Alicea, Emanuel Gull +2
Frustration refers to competition between different interactions that cannot be simultaneously satisfied, a familiar feature in many magnetic solids. Strong frustration results in…
Thermal conductivity via magnetic excitations in spin-chain materials
A. V. Sologubenko, T. Lorenz, H. R. Ott +1
We discuss the recent progress and the current status of experimental investigations of spin-mediated energy transport in spin-chain and spin-ladder materials with antiferromagneti…
Orbital Dependence of Quasiparticle Lifetimes in Sr2RuO4
R. M. Konik, T. M. Rice
Using a phenomenological Hamiltonian, we investigate the quasiparticle lifetimes and dispersions in the three low energy bands, gamma, beta, and alpha of Sr2RuO4. Couplings in the…
Effect of light Sr doping on the spin-state transition in LaCoO_3
A. Podlesnyak, K. Conder, E. Pomjakushina +3
We present an inelastic neutron scattering study of the low energy crystal-field excitations in the lightly doped cobalt perovskite La_0.998Sr_0.002CoO_3. In contrast to the parent…
Plaquette bond order wave in the quarter-filled extended Hubbard model on the checkerboard lattice
Martin Indergand, Carsten Honerkamp, Andreas Laeuchli +2
An extended Hubbard model (including nearest-neighbor repulsion and antiferromagnetic spin exchange) is investigated on the frustrated checkerboard lattice, a two-dimensional analo…