9 papers
Ground State of v=1 Bilayer Quantum Hall Systems
Naokazu Shibata, Daijiro Yoshioka
The ground-state wave function and the energy gap are calculated for various layer separations d and for up to 24 electrons by the density matrix renormalization group (DMRG) metho…
Real-Space Imaging of Alternate Localization and Extension of Quasi Two-Dimensional Electronic States at Graphite Surfaces in Magnetic Fields
Y. Niimi, H. Kambara, T. Matsui +2
We measured the local density of states (LDOS) of a quasi two-dimensional (2D) electron system near point defects on a surface of highly oriented pyrolytic graphite (HOPG) with sca…
Theory of "charge" measured by the shot noise experiments in the fractional quantum Hall states
Daijiro Yoshioka
Shot noise at filling factor is investigated theoretically. It is argued that the "charge" measured by the noise at zero temperature is not the quasiparticle charge b…
Real Space Effective Interaction and Phase Transition in the Lowest Landau Level
Naokazu Shibata, Daijiro Yoshioka
The transition between the stripe state and the liquid state in a high magnetic field is studied by the density-matrix renormalization-group (DMRG) method. Systematic analysis on t…
Stripe State in the Lowest Landau Level
Naokazu Shibata, Daijiro Yoshioka
The stripe state in the lowest Landau level is studied by the density matrix renormalization group (DMRG) method. The ground state energy and pair correlation functions are systema…
Nontrivial behavior of the Fermi arc in the staggered-flux ordered phase
Koichi Hamada, Daijiro Yoshioka
The doping and temperature dependences of the Fermi arc in the staggered-flux, or the d-density wave, ordered phase of the t-J model are analyzed by the U(1) slave boson theory. No…