52 citations · 85 across the 6 of their papers we have counts for
6 papers
Non-Degenerate Ground State in the Antiferromagnetic Double-Exchange Model on a Triangular Lattice
Yoshihiro Shimomura, Shin Miyahara, Nobuo Furukawa
In order to study effects of frustration in an itinerant electron system, we investigate ground states of the antiferromagnetic double-exchange model on a triangular lattice. In th…
Frustration-induced Dodecamer Ordering in the Double-Exchange Spin Ice Model on the Kagomé Lattice
Yoshihiro Shimomura, Shin Miyahara, Nobuo Furukawa
We investigate a detail of a dodecamer cluster ordering in a double-exchange spin ice model on a kagomé lattice. In frustrated systems, ordinary spin orderings are suppressed and m…
Flat-Bands on Partial Line Graphs -- Systematic Method for Generating Flat-Band Lattice Structures
Shin Miyahara, Kenn Kubo, Hiroshi Ono +2
We introduce a systematic method for constructing a class of lattice structures that we call ``partial line graphs''.In tight-binding models on partial line graphs, energy bands wi…
Mechanism for lifting the degeneracy in the double-exchange spin ice model on a kagomé lattice: Dodecamer formation
Yoshihiro Shimomura, Shin Miyahara, Nobuo Furukawa
We investigated the double-exchange spin ice model on a kagomé lattice by Monte Carlo simulation in order to study a mechanism for lifting the degeneracy in frustrated electron sys…
Spin Dodecamer Formation in the Double-Exchange Spin Ice Model
Yoshihiro Shimomura, Shin Miyahara, Nobuo Furukawa
We investigated the double-exchange spin ice (DESI) model on a kagomé lattice by Monte Carlo simulation to study the effects of a geometrical frustration, and the mechanism that ge…
Magnon scattering processes and low temperature resistivity in CMR manganites
N. Furukawa, Y. Shimomura, T. Akimoto +1
Low temperature resistivity of CMR manganites is investigated. At the ground state, conduction electrons are perfectly spin polarized, which is called half-metallic. From one-magno…