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47 papers · 2 filters
Heavy Fermion Behavior, Crystalline Electric Field Effects, and Weak Ferromagnetism in SmOs_{4}Sb_{12}
W. M. Yuhasz, N. A. Frederick, P. -C. Ho +8
The filled skutterudite compound SmOs_{4}Sb_{12} was prepared in single crystal form and characterized. The SmOs_{4}Sb_{12} crystals have the LaFe_{4}P_{12}-type structure with lat…
Spin current and magneto-electric effect in non-collinear magnets
Hosho Katsura, Naoto Nagaosa, Alexander V. Balatsky
A new microscopic mechanism of the magneto-electric (ME) effect based on the spin supercurrent is theoretically presented for non-collinear magnets. The close analogy between the s…
Ferromagnetism and possible heavy fermion behavior in single crystals of NdOsSb
P. -C. Ho, W. M. Yuhasz, N. P. Butch +8
Single crystals of the filled-skutterudite compound NdOsSb have been investigated by means of electrical resistivity, magnetization, and specific heat measurements. The…
The dimerized phase of ionic Hubbard models
A. A. Aligia, C. D. Batista
We derive an effective Hamiltonian for the ionic Hubbard model at half filling, extended to include nearest-neighbor repulsion. Using a spin-particle transformation, the effective…
Neutron diffraction study of average and local structure in La0.5Ca0.5MnO3
E. E. Rodriguez, Th. Proffen, A. Llobet +2
We used neutron powder diffraction to obtain the local and long-range structure of La0.5Ca0.5MnO3 at room temperature and 20K. By combining Rietveld and pair distribution function…
Temperature and Magnetic Field Enhanced Hall Slope of a Dilute 2D Hole System in the Ballistic Regime
Xuan P. A. Gao, G. S. Boebinger, A. P. Mills +3
We report the temperature() and perpendicular magnetic field() dependence of the Hall resistivity of dilute metallic two-dimensional(2D) holes in GaAs over a broa…