A superconducting layer placed between two ferromagnetic insulators can drive an antiferromagnetic exchange coupling between them. Here, the authors demonstrate that such an exchange coupling promotes non-volatile bistable memory states and repeatable “absolute” switching in GdN/V/GdN, where the device exhibits a superconducting transition only when the two ferromagnets have anti-parallel magnetization.
- Sonam Bhakat
- Sounak Samanta
- Avradeep Pal
