40 citations · 256 across the 20 of their papers we have counts for
20 papers
Dicke Model for Quantum Hall Systems
Y. Hama, M. H. Fauzi, K. Nemoto +2
Quantum Hall (QH) systems consist of many-body electron and nuclear spins. They are coupled so weakly through the hyperfine interaction that normally electron spin dynamics are sca…
Nambu-Goldstone modes and the Josephson supercurrent in the bilayer quantum Hall system
Yusuke Hama, George Tsitsishvili, Zyun F. Ezawa
An interlayer phase coherence develops spontaneously in the bilayer quantum Hall system at the filling factor . On the other hand, the spin and pseudospin degrees of freedom a…
Spin Supercurrent in the Canted Antiferromagnetic Phase
Yusuke Hama, George Tsitsishvili, Zyun F. Ezawa
The spin and layer (pseudospin) degrees of freedom are entangled coherently in the canted antiferromagnetic phase of the bilayer quantum Hall system at the filling factor . Th…
The Study of Goldstone Modes in =2 Bilayer Quantum Hall Systems
Y. Hama, Y. Hidaka, G. Tsitsishvili +1
At the filling factor =2, the bilayer quantum Hall system has three phases, the spin-ferromagnet phase, the spin singlet phase and the canted antiferromagnet (CAF) phase, depend…
Anisotropy of Magnetoresistance Hysteresis around the Quantum Hall State in Tilted Magnetic Field
K. Iwata, M. Morino, A. Fukuda +4
We present an anisotropy of the hysteretic transport around the spin transition point at Landau level filling factor in tilted magnetic field. When the direction of the in-…
Pseudospin Soliton in the Bilayer Quantum Hall State
A. Fukuda, D. Terasawa, M. Morino +6
We investigate a domain structure of pseudospins, a soliton lattice in the bilayer quantum Hall state at total Landau level filling factor , in a tilted magnetic field, where…