103 citations · 562 across the 24 of their papers we have counts for
5 papers · 1 filter
Near Critical States of Random Dirac Fermions
Yoshifumi Morita, Yasuhiro Hatsugai
Random Dirac fermions in a two-dimensional space are studied numerically. We realize them on a square lattice using the -flux model with random hopping. The system preserves two…
Quasi-particle spectra around a single vortex in a d-wave superconductor
Y. Morita, M. Kohmoto, K. Maki
Using the Bogoliubov-de Gennes equation, we study quasi-particle spectra around a single vortex in a d-wave superconductor, where a magnetic field is parallel to the c-axis. In the…
Superconducting correlation in the one-dimensional - model with anisotropic spin interaction and broken parity
J. Shiraishi, Y. Morita, M. Kohmoto
A variant of the one-dimensional - model with anisotropic spin interaction and broken parity is studied by the nested algebraic Bethe-ansatz method. The gapless charge excita…
Exact Results on Superconductivity due to Interband Coupling
Y. Morita, Y. Hatsugai, M. Kohmoto
We present a family of exactly solvable models at arbitrary filling in any dimensions which exhibit novel superconductivity with interband pairing. By the use of the hidden …
Universal Correlations in the random matrices and 1D particles with long range interactions in a confinement potential
Y. Morita, Y. Hatsugai, M. Kohmoto
We study the correlations between eigenvalues of the large random matrices by a renormalization group approach. The results strongly support the universality of the correlations pr…