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29 papers · 1 filter
Static and Dynamical Properties of the Ferromagnetic Kondo Model with Direct Antiferromagnetic Coupling Between the localized Electrons
Seiji Yunoki, Adriana Moreo
The phase diagram of the Kondo lattice Hamiltonian with ferromagnetic Hund's coupling in the limit where the spin of the localized electrons is classical is analyzed in on…
Hidden Duality and associated instabilities of Tomonaga-Luttinger Liquid on Lattice
Z. N. C. Ha
Hidden duality and associated instabilities of the spinless Luttinger liquid on lattice are reported. The local quantum fluctuations and the long-distance chiral modes compete and…
Numerical Calculations of the B1g Raman Spectrum of the Two-Dimensional Heisenberg Model
A. W. Sandvik, S. Capponi, D. Poilblanc +1
The B1g Raman spectrum of the two-dimensional S=1/2 Heisenberg model is discussed within Loudon-Fleury theory at both zero and finite temperature. The exact T=0 spectrum for lattic…
Effect of Spin-1 Impurities in Dimerized Heisenberg Chains
P. M. Hansen, J. A. Riera, A. Delia +1
The effects of spin-1 impurities introduced in dimerized antiferromagnetic spin chains are studied using Lanczos diagonalization and quantum Monte Carlo simulations. Firstly, the m…
Absence of Localization in Certain Field Effect Transistors
S Washburn, D Popovic, KP Li +1
We review some experimental and theoretical results on the metal-to-insulator transition (MIT) observed at zero magnetic field (B=0) in several two-dimensional electron systems (2D…
Violation of Kohler's rule by the magnetoresistance of a quasi-two-dimensional organic metal
Ross H. McKenzie, J. S. Qualls, S. Y. Han +1
The interlayer magnetoresistance of the quasi-two-dimensional metal -(BEDT-TTF)KHg(SCN) is considered. In the temperature range from 0.5 to 10 K and for fields up to 10…