6 papers
Photon energy absorption rate of a striped Hall gas
Y. Ishizuka, T. Aoyama, N. Maeda +1
Using symmetries of the current correlation function, we analyze the frequency dependence of the photon energy absorption rate of a striped Hall gas. Since the magnetic translation…
Optimal orientation of striped states in the quantum Hall system against external modulations (in 26th ICPS proceedings)
T. Aoyama, K. Ishikawa, N. Maeda
The physical properties of striped Hall state in the presence of an external unidirectional periodic potential is investigated. The study of searching the optimal orientation of th…
Unusual Properties of Anisotropic Hall Gas: Implication to Metrology of the Integer Quantum Hall Effect
K. Ishikawa, N. Maeda
Physical properties of anisotropic compressible quantum Hall states and their implications to integer quantum Hall effect are studied based on a mean field theory on the von Neuman…
Negative Pressure of Anisotropic Compressible Hall States : Implication to Metrology
K. Ishikawa, N. Maeda
Pressure, compressibility, and Hall conductance of anisotropic states at higher Landau levels are computed. Pressure and compressibility become negative. Hall conductance is unquan…
Quantum Hall Dynamics on von Neumann Lattice
K. Ishikawa, N. Maeda, T. Ochiai +1
Quantum Hall Dynamics is formulated on von Neumann lattice representation where electrons in Landau levels are defined on lattice sites and are treated systematically like lattice…
Is Hall Conductance in Hall Bar Geometry a Topological Invariant?
K. Ishikawa, N. Maeda, K. Tadaki
A deep connection between the Hall conductance in realistic situation and a topological invariant is pointed out based on von-Neumann lattice representation in which Landau level e…