Manipulating nonequilibrium magnetism through superconductors.
Electrostatic control of the magnetization of a normal mesoscopic conductor is analyzed in a hybrid superconductor-normal-conductor-superconductor system. This effect stems from the interplay between the nonequilibrium condition in the normal region and the Zeeman splitting of the quasi-particle density of states of the superconductor subjected to a static in-plane magnetic field. Unexpected spin-dependent effects such as magnetization suppression, diamagnetic-like response of the susceptibility, as well as spin-polarized current generation are the most remarkable features presented. The impact of scattering events is evaluated and lets us show that this effect is compatible with realistic material properties and fabrication techniques.
Giazotto
Francesco
F
NEST-INFM and Scuola Normale Superiore, I-56126 Pisa, Italy. giazotto@sns.it
Taddei
Fabio
F
Fazio
Rosario
R
Beltram
Fabio
F