6 papers
Winding charge density wave: intertwining of structural chirality and phase topology of electronic order
Shun Asano, Youichi Yanase
We propose a class of chiral charge density waves (CDWs), dubbed winding CDWs, that exhibit macroscopic chirality despite a single ordering wavevector. In screw-symmetric chiral cr…
Quasiclassical theory of vortex states in locally non-centrosymmetric superconductors: application to CeRhAs
Akihiro Minamide, Youichi Yanase
CeRhAs, a heavy fermion superconductor discovered in 2021, exhibits two distinct superconducting phases under a -axis magnetic field. This unconventional phase diagr…
Spontaneous spin-selective structural phase transition in chiral crystals
Shun Asano, Youichi Yanase
In this Letter, we predict a structural phase transition unique to chiral crystals with screw symmetry. In chiral crystals, the phonon frequency renormalized by the electron-phonon…
Twisted Bogoliubov quasiparticles in the superconducting NbSe monolayer on graphene
Masahiro Naritsuka, Tadashi Machida, Shun Asano +2
The superconducting properties of layered materials can be controlled by thinning, stacking, and twisting, demanding investigation of electronic states by spectroscopic means at th…
Tuning monolayer superconductivity in twisted NbSe graphene heterostructures
Shun Asano, Youichi Yanase
The recent advent of artificial structures has triggered the emergence of fascinating phenomena that could not exist in natural compounds. A prime example is twisted multilayers, i…
Superconducting meron phase in locally noncentrosymmetric superconductors
Akihiro Minamide, Youichi Yanase
Theory of the superconducting parity transition is extended by incorporating the vortex degree of freedom. We employ the bilayer Rashba model representing locally noncentrosymmetri…