A band-projection formalism is developed for calculating the superfluid weight in two-
dimensional multiorbital superconductors with an orbital-dependent pairing. It is discovered …

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 …

The superfluid weight of an isolated flat band in multiorbital superconductors contains
contributions from the band's quantum metric and a lattice geometric term that depends on …

Noncentrosymmetric superconductors offer fascinating phenomena of quantum transport
and optics such as nonreciprocal and nonlinear responses. Time-reversal symmetry …

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

Recently it has been shown experimentally that the superconducting state of FeSe 1− x S x
exhibits Bogoliubov Fermi surfaces for x> 0.17. These Bogoliubov Fermi surfaces appear …

A two-component quasi-two-dimensional superconductor with Dzyaloshinsky-Moriya
interaction is studied based on the Ginzburg-Landau and Bogoliubov-de Gennes theories …

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

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 …

Bloch electrons in multiorbital systems carry quantum geometric information characteristic of
their wavevector-dependent interorbital mixing. The geometric nature impacts …