Strain-switchable field-induced superconductivity.

ABSTRACT: Field-induced superconductivity is a rare phenomenon where an applied magnetic field enhances or induces superconductivity. Here, we use applied stress as a control switch between a field-tunable superconducting state and a robust non-field-tunable state. This marks the first demonstration of a strain-tunable superconducting spin valve with infinite magnetoresistance. We combine tunable uniaxial stress and applied magnetic field on the ferromagnetic superconductor Eu(Fe_0.88Co_0.12)₂As₂ to shift the field-induced zero-resistance temperature between 4 K and a record-high value of 10 K. We use x-ray diffraction and spectroscopy measurements under stress and field to reveal that strain tuning of the nematic order and field tuning of the ferromagnetism

SUBMITTER: Sanchez JJ 

PROVIDER: S-EPMC10672156 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature