1 citations · 1 across the 2 of their papers we have counts for
6 papers
Diagnosing energy gap in quantum spin liquids via polarization amplitude
Takayuki Yokoyama, Yasuhiro Tada
Identifying whether a many-body ground state is gapped or gapless is a fundamental yet challenging problem, especially in quantum spin liquids. In this work, we develop a gap-diagn…
Polarization-based indices in quantum many-body systems: validity and extension beyond one dimension
Yasuhiro Tada
The expectation value of the twist operator has been widely used as a polarization-based index for gapped and gapless phases in interacting quantum many-body systems. Although nume…
Projectification of point group symmetries with a background flux and Lieb-Schultz-Mattis theorem
Yasuhiro Tada, Masaki Oshikawa
We discuss the Lieb-Schultz-Mattis (LSM) theorem in two-dimensional spin systems with on-site spin rotation symmetry and point group …
Spin susceptibility in quasicrystal superconductor with spin-orbit interactions
Yasuhiro Tada
We study impacts of spin-orbit interactions on the spin susceptibility in quasicrystal superconductors, motivated by the anomolous superconducting properties in the van der Waals q…
Strain-induced quantum oscillation in Kitaev spin liquid with Majorana-Fermi surface
Takayuki Yokoyama, Yasuhiro Tada
We theoretically study Landau quantization of itinerant Majorana quasiparticles induced by lattice strain in a Kitaev spin liquid with Majorana Fermi surfaces. We consider the isot…
Stability of quasi-particle creation and multiband geometry in fractional Chern insulators under magnetic fields
Nozomi Higashino, Yasuhiro Tada
We study creation of quasi-particles in fractional Chern insulators (FCI) under magnetic fields. We consider two representative models, the Kapit-Mueller model and the checkerboard…