12 citations · 20 across the 4 of their papers we have counts for
5 papers
Strain-Induced Helical Superconductivity and the Zero-Field Diode Effect
Raigo Nagashima, Jörg Schmalian
Motivated by the strain-induced zero-field superconducting diode effect observed in PbTaSe, we identify a mechanism by which strain generates nonreciprocal superconducting tran…
Type II Lifshitz invariant and optically active Higgs mode in time-reversal symmetry broken superconductors
Raigo Nagashima, Chihiro Mamiya, Naoto Tsuji
Lifshitz invariant is a symmetry-allowed term in the Ginzburg-Landau free energy of an ordered phase, involving the order parameters and a single spatial derivative, which serves a…
Hall effect in topologically trivial isolated flat-band systems
Raigo Nagashima, Masao Ogata, Naoto Tsuji
We study the Hall effect in topologically trivial isolated flat-band systems (i.e., flat bands are separated from other bands and have zero Chern number) for a weak magnetic field.…
Optically active Higgs and Leggett modes in multiband pair-density-wave superconductors with Lifshitz invariant
Raigo Nagashima, Titouan Mouilleron, Naoto Tsuji
Lifshitz invariant is a symmetry invariant composed of multiple order parameters that contain a single spatial derivative in a Ginzburg-Landau (GL) free energy, which may induce a…
Classification of Lifshitz invariant in multiband superconductors: an application to Leggett modes in the linear response regime in Kagome lattice models
Raigo Nagashima, Sida Tian, Rafael Haenel +2
Multiband superconductors are sources of rich physics arising from multiple order parameters, which show unique collective dynamics including Leggett mode as relative phase oscilla…