Superconductors lacking both inversion symmetry and time-reversal symmetry have been
attracting much attention as a platform for exotic superconducting phases and anomalous …

Bloch wave functions of electrons have properties called quantum geometry, which has
recently attracted much attention as the origin of intriguing physical phenomena. In this …

Multiband superconductors are sources of rich physics arising from multiple order
parameters, which show unique collective dynamics including Leggett mode as relative …

We show that quantum geometry induces ferromagnetic fluctuation resulting in spin-triplet
superconductivity. The criterion for ferromagnetic fluctuation is clarified by analyzing …

Parity-time-reversal symmetry (PT symmetry), a symmetry for the combined operations of
space inversion (P) and time reversal (T), is a fundamental concept of physics and …

We study a superconductor Josephson junction with a Bogoliubov Fermi surface, employing
McMillan's Green's function technique. The low-energy degrees of freedom are described by …

Understanding the formation of novel pair density waves (PDWs) in strongly correlated
electronic systems remains challenging. Recent mean-field studies suggest that PDW …

In noncentrosymmetric superconductors the pair potential has both even-parity singlet and
odd-parity triplet components. If time-reversal symmetry is broken, the superconducting …

Altermagnets are a newly identified type of collinear anti-ferromagnetism with vanishing net
magnetic moment, characterized by lifted Kramers' degeneracy in parts of the Brillouin zone …

The effect of impurities on a superconductor with Bogoliubov Fermi surfaces (BFSs) is
studied using a realistic tight-binding model. Based on the band structure composed of d …