5 papers
Purely Electronic Chirality without Structural Chirality
Takayuki Ishitobi, Kazumasa Hattori
We introduce the concept of purely electronic chirality (PEC), which arises in the absence of structural chirality. In condensed matter physics and chemistry, chirality has convent…
Three-stage Phase Transitions and Field-induced Phases in CeCoSi:A Landau Theory
Takayuki Ishitobi
We investigate both the nonmagnetic and magnetic ordered phases of CeCoSi using Landau theory. Our analysis predicts three successive phase transitions at zero magnetic field. A qu…
Superzone gap formation induced by ferroic orders
Takayuki Ishitobi
We demonstrate that a superzone gap, typically associated with antiferroic ordering, can also emerge from ferroic orders in systems with sublattice degrees of freedom. By analyzing…
Inverse Single-sided Magnet
Takayuki Ishitobi
A single-sided magnet generates a magnetic field on only one side while canceling it on the opposite side, a feature that has enabled diverse applications in both fundamental scien…
Orbital moiré and quadrupolar triple-q physics in a triangular lattice
K. Hattori, T. Ishitobi, H. Tsunetsugu
We numerically study orders of planer type quadrupoles on a triangular lattice with nearest-neighbor isotropic and anisotropic interactions. This type of qua…