Incommensurate magnetic states induced by ordering competition in

Abstract

Quantum criticality near a certain magnetic phase transition beneath the superconducting (SC) dome of is attentively studied by virtue of a phenomenological theory in conjunction with the renormalization group approach. We report that ordering competition between magnetic and SC fluctuations is capable of coaxing incommensurate (IC) magnetic states to experience distinct fates depending upon their spin configurations. The C 2-symmetry IC magnetic stripe with a perpendicular magnetic helix dominates over other C 2-symmetry magnetic competitors and hints at a potential candidate for the unknown C 2-symmetry magnetic state. Of the C 4-symmetry IC magnetic phases, the IC charge spin density wave is substantiated to be superior, shedding light on the significant intertwining of charge and spin degrees of freedom. Meanwhile, ferocious fluctuations render a sharp fall in superfluid density alongside a dip in critical temperature as well as intriguing behavior of the London penetration depth.