67 citations · 177 across the 9 of their papers we have counts for
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Magnetization cusp singularities of frustrated Kondo necklace model
Takahiro Yamamoto, Rumi Manago, Yoshihiro Mori +1
Magnetization processes of frustrated Kondo necklace model are studied by means of a density matrix renormalization group (DMRG) method and an elementary band theory based on a bon…
Phase diagram and critical properties of the frustrated Kondo necklace model in a magnetic field
Takahiro Yamamoto, Koichiro Ide, Chikara Ishii
The critical properties of the frustrated Kondo necklace model with a half saturation magnetization () have been studied by means of an exact-diagonalization method. It is s…
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…
Bond-Operator Mean Field Theory for the Bilayer Heisenberg Model
Yasuhiro Matsushita, Martin P. Gelfand, Chikara Ishii
Bond-operator mean field equations for the square-lattice, S=1/2 bilayer Heisenberg model are developed and solved numerically. In the vicinity of both the zero-field critical poin…
Phase Transitions in Bilayer Heisenberg Model with General Couplings
Yasuhiro Matsushita, Martin P. Gelfand, Chikara Ishii
The ground state properties and phase diagram of the bilayer square-lattice Heisenberg model are studied in a broad parameter space of intralayer exchange couplings, assuming an an…