2020/07/22 by P. M. Marychev, Vadim Plastovets, V. D. Plastovets +4
Materials Science · Physics and Astronomy · #Condensed matter physics #Diamagnetism #FOS: Physical sciences #Ferromagnetism #Geometry #Magnetic and transport properties of perovskites and related materials #Magnetic field #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Paramagnetism #Perpendicular #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Superconductivity #Superconductivity (cond-mat.supr-con) #cond-mat.mes-hall #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.2007.11351
8 pages, 8 figures
arxiv created 2020/07/22 · openalex publication_date 2020/07/22 · arxiv updated 2020/07/23 · openalex created_date 2020/07/29 · openalex updated_date 2026/07/28
We theoretically study magnetic response of a superconductor/ferromagnet/normal-metal (SFN) strip in an in-plane Fulde--Ferrell (FF) state. We show that unlike to ordinary superconducting strip the FF strip can be switched from diamagnetic to paramagnetic and then back to diamagnetic state by \it increasing the perpendicular magnetic field. Being in paramagnetic state FF strip exhibits magnetic field driven second order phase transition from FF state to the ordinary state without spatial modulation along the strip. We argue that the global paramagnetic response is connected with peculiar dependence of sheet superconducting current density on supervelocity in FF state and it exists in nonlinear regime.