307 citations · 713 across the 8 of their papers we have counts for
4 papers · 1 filter
Vector chiral and multipolar orders in the spin-1/2 frustrated ferromagnetic chain in magnetic field
Toshiya Hikihara, Lars Kecke, Tsutomu Momoi +1
We study the one-dimensional spin-1/2 Heisenberg chain with competing ferromagnetic nearest-neighbor J_1 and antiferromagnetic next-nearest-neighbor J_2 exchange couplings in the p…
Nuclear Magnetic Orderings and Frustration in Bcc 3He in High Magnetic Fields
Hiroshi Fukuyama, K. Yawata, T. Momoi +2
We studied phase transitions and thermodynamic properties of the field-induced antiferromagnetic nuclear-spin ordered phase in bcc solid 3He by measuring the melting pressure at te…
Exact duality relations in correlated electron systems
Tsutomu Momoi, Toshiya Hikihara
Using gauge transformations on electron bond operators, we derive exact duality relations between various order parameters for correlated electron systems. Applying these transform…
Magnetism and Electronic States of Systems with Strong Hund Coupling
K. Kubo, D. M. Edwards, A. C. M. Green +2
This paper is a brief review of our recent studies concerning on magnetism and electronic states of lattice systems with Hund coupling. First we examined the effectiveness of the H…