119 citations · 532 across the 30 of their papers we have counts for
30 papers
Quantum paramagnetic states in the spin-1/2 distorted honeycomb-lattice Heisenberg antiferromagnet -- application to Cu(pymca)(ClO)
Tokuro Shimokawa, Ken'ichi Takano, Zentaro Honda +2
We investigate the ground-state phase diagram of a spin-1/2 honeycomb-lattice antiferromagnetic (AF) Heisenberg model with three exchange interactions, , , an…
Dimer-Monomer Ground State for Extended Spin-1/2 Diamond Chain
Ken'ichi Takano
We present a condition in which the dimer-monomer state is exactly the ground state of an extended diamond chain with spin magnitude 1/2. The Hamiltonian of the extended diamond ch…
Ground State Phase Diagram of S=1 Diamond Chains
Kazuo Hida, Ken'ichi Takano
We investigate the ground-state phase diagram of a spin-1 diamond chain. Owing to a series of conservation laws, any eigenstate of this system can be expressed using the eigenstate…
Ferromagnetic clouds caused by hole motion in a one-dimensional - mode
Kazuhiro Sano, Ken'ichi Takano
The one-dimensional --- model is examined in the one-hole case, in which the total number of electrons is one less than the number of the lattice sites. The gro…
Topological Phases of the Spin-1/2 Ferromagnetic-Antiferromagnetic Alternating Heisenberg Chain with Frustrated Next-Nearest-Neighbour Interaction
Kazuo Hida, Ken'ichi Takano, Hidenori Suzuki
The spin-1/2 ferromagnetic-antiferromagnetic alternating Heisenberg chain with ferromagnetic next-nearest-neighbour (NNN) interaction is investigated. The ground state is the Halda…
Effects of Single-site Anisotropy on Mixed Diamond Chains with Spins 1 and 1/2
Kazuo Hida, Ken'ichi Takano
Effects of single-site anisotropy on mixed diamond chains with spins 1 and 1/2 are investigated in the ground states and at finite temperatures. There are phases where the ground s…