Magnetic field induced global paramagnetic response in a Fulde-Ferrell superconducting strip

P. M. Marychev; V. D. Plastovets; D. Yu. Vodolazov

doi:10.1103/PhysRevB.102.054519

← Back to search

Magnetic field induced global paramagnetic response in a Fulde-Ferrell superconducting strip

P. M. Marychev, V. D. Plastovets, D. Yu. Vodolazov

DOI 10.1103/PhysRevB.102.054519 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

We theoretically study the magnetic response of a superconductor/ferromagnet/normal-metal strip in an in-plane Fulde-Ferrell (FF) state. We show that unlike an ordinary superconducting strip, the FF strip can be switched from diamagnetic to paramagnetic and then back to a diamagnetic state by increasing the perpendicular magnetic field. Being in a paramagnetic state, the FF strip exhibits a magnetic field driven second-order phase transition from the FF state to the ordinary state without spatial modulation along the strip. We argue that the global paramagnetic response is connected with a peculiar dependence of the sheet superconducting current density on supervelocity in the FF state, and it exists in the nonlinear regime.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
NbN/Au Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown