90 citations · 572 across the 31 of their papers we have counts for
31 papers
Robust Zero Modes in Disordered Two-Dimensional Honeycomb Lattice with Kekulé Bond Ordering
Tohru Kawarabayashi, Yuya Inoue, Ryo Itagaki +2
Robustness of zero-modes of two-dimensional Dirac fermions is examined numerically for the honeycomb lattice in the presence of Kekulé bond ordering. The split Landau levels…
Bulk-edge correspondence with generalized chiral symmetry
Tohru Kawarabayashi, Yasuhiro Hatsugai
The bulk-edge correspondence in topological phases is extended to systems with the generalized chiral symmetry, where the conventional chiral symmetry is broken. In such systems, w…
Topologically Protected Doubling of Tilted Dirac Fermions in Two Dimensions
Tohru Kawarabayashi, Hideo Aoki, Yasuhiro Hatsugai
The doubling of massless Dirac fermions on two-dimensional lattices is theoretically studied. It has been shown that the doubling of massless Dirac fermions on a lattice with broke…
Fractionally quantized Berry's phase in an anisotropic magnet on the Kagome lattice
Tohru Kawarabayashi, Kota Ishii, Yasuhiro Hatsugai
A fractionally quantized Berry phase is examined numerically in an anisotropic spin-1/2 XXZ model on the Kagome lattice. It is shown that the Berry phase has a fractionally quantiz…
Lattice realization of the generalized chiral symmetry in two dimensions
T. Kawarabayashi, H. Aoki, Y. Hatsugai
While it has been pointed out that the chiral symmetry, which is important for the Dirac fermions in graphene, can be generalized to tilted Dirac fermions as in organic metals, suc…
Survival of sharp Landau levels in massive tilted Dirac fermions: Protection by generalized chiral operator
Yasuhiro Hatsugai, Tohru Kawarabayashi, Hideo Aoki
Anomalously sharp (delta-function-like) Landau level in the presence of disorder is usually considered to be a manifestation of the massless Dirac fermions in magnetic fields…