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22 papers · 1 filter
Normal-state magnetotransport in La_{1.905}Ba_{0.095}CuO_{4} single crystals
Yasushi Abe, Yoichi Ando, J. Takeya +4
The normal-state magnetotransport properties of La_{2-x}Ba_{x}CuO_{4} single crystals with x=0.095 are measured; at this composition, a structural transition to a low-temperature-t…
Non-Universal Power Law of the "Hall Scattering Rate" in a Single-Layer Cuprate Bi_{2}Sr_{2-x}La_{x}CuO_{6}
Yoichi Ando, T. Murayama
In-plane resistivity ρ_{ab}, Hall coefficient, and magnetoresistance (MR) are measured in a series of high-quality Bi_{2}Sr_{2-x}La_{x}CuO_{6} crystals with various carrier concent…
Spin Dependence of the Critical Concentration for the Neel State of 2D Impure Heisenberg Antiferromagnets
Chitoshi Yasuda, Akihide Oguchi
The spin-wave theory and the coherent potential approximation are applied to a spin S Heisenberg antiferromagnet with nonmagnetic impurities on square lattice. The impurity effects…
Temperature- and magnetic-field-dependent thermal conductivity of pure and Zn-doped Bi_{2}Sr_{2}CaCu_{2}O_{8+δ} single crystals
Yoichi Ando, J. Takeya, Yasushi Abe +2
The thermal conductivity κof Bi-2212 is measured in pure and Zn-doped crystals as a function of temperature and magnetic field. The in-plane resistivity is also measured on the ide…
Spin-Wave Excitations of Half-Filled Kondo Lattice Model
Yasuhiro Matsushita, Ryousuke Shiina, Chikara Ishii
The spin excitations in the antiferromagnetic phase of half-filled Kondo lattice model are studied by means of the decoupling approximation for spin Green's function. The spin-wave…
Unconventional ferromagnetic and spin-glass states of the reentrant spin glass Fe0.7Al0.3
Wei Bao, S. Raymond, S. M. Shapiro +3
Spin excitations of single crystal Fe0.7Al0.3 were investigated over a wide range in energy and reciprocal space with inelastic neutron scattering. In the ferromagnetic phase, prop…