Atomic thickness hybrid F/S/F structures

TL;DR

This paper introduces an exactly solvable model for atomic thickness F/S/F structures, revealing how the superconducting critical temperature and gap depend on ferromagnetic orientation and temperature, highlighting a unique proximity effect behavior.

Contribution

The study presents a novel exactly solvable model for atomic thickness F/S/F structures, elucidating the temperature-dependent interplay between ferromagnetic alignment and superconducting properties.

Findings

Critical temperature is higher for antiparallel ferromagnetic alignment.

Superconducting gap is larger for parallel alignment at low temperatures.

Unique temperature dependence of the proximity effect in F/S/F structures.

Abstract

We propose an exactly solvable model to describe the properties of atomic thickness hybrid ferromagnet-superconductor-ferromagnet (F/S/F) structures. We show that the superconducting critical temperature is always higher for antiparallel orientation of the ferromagnetic moments. However at low temperature the superconducting gap occurs to be larger for parallel orientation of the ferromagnetic moments. This leads to a peculiar temperature dependence of the proximity effect in (F/S/F) structures.