58 citations · 188 across the 23 of their papers we have counts for
6 papers · 1 filter
Moiré in -valley square lattice: Copper- and iron-based superconductor simulation in a single device
Toshikaze Kariyado, Yusuf Wicaksono, Ashvin Vishwanath +2
Novel superconducting phases have been found in various moiré heterostructures based on hexagonal lattices. However, the archetypal high-temperature superconductors (cuprates, iron…
Single-band square lattice Hubbard model from twisted bilayer C568
Toshikaze Kariyado, Ashvin Vishwanath, Zhu-Xi Luo
We propose twisted homobilayer of a carbon allotrope, C, to be a promising platform to realize controllable square lattice single-band extended Hubbard model. This setup ha…
Flat band in twisted bilayer Bravais lattices
Toshikaze Kariyado, Ashvin Vishwanath
Band engineering in twisted bilayers of the five generic two-dimensional Bravais networks is demonstrated. We first derive symmetry-based constraints on the interlayer coupling, wh…
Many-body Chern number without integration
Koji Kudo, Haruki Watanabe, Toshikaze Kariyado +1
The celebrated work of Niu, Thouless, and Wu demonstrated the quantization of Hall conductance in the presence of many-body interactions by revealing the many-body counterpart of t…
Many-Body Chern Numbers of and States on Various Lattices
Koji Kudo, Toshikaze Kariyado, Yasuhiro Hatsugai
For various two dimensional lattices such as honeycomb, kagome, and square-octagon, gauge conventions (string gauge) realizing minimum magnetic fluxes that are consistent with the…
Normal State Spin Dynamics of Five-band Model for Iron-pnictides
Toshikaze Kariyado, Masao Ogata
Normal state spin dynamics of the recently discovered iron-pnictide superconductors is discussed by calculating spin structure factor S(q, omega) in an itinerant five-band model wi…