2026/07/27 by Yi-Ting Tu, Yang-Zhi Chou, Yi Huang +1
#cond-mat.supr-con #cond-mat.mes-hall #cond-mat.str-el
We study how the interplay between nontrivial quantum geometry and an applied stripe potential affects superconductivity in a two-dimensional single-flavor metal. Assuming a weak contact attractive interaction and focusing on the lowest subband in the presence of a strong stripe potential, we analytically derive two possible pairing states in the quasi-one-dimensional limit. In addition to the conventional longitudinal py-wave order (with the stripes along the y direction), we find that an exotic transverse px-wave order can be stabilized. The competition between these two orders is controlled by the electron density of each stripe and the Berry-curvature-dressed interaction. Notably, the transverse px wave order develops a nodal line at kx=0, while the longitudinal py order is fully gapped. We discuss the possible experimental probes distinguishing these orders. Our results establish a way of controlling the pairing symmetry through a stripe potential, predicting superconductivity with nontrivial quantum geometry.