title: Single Abrikosov vortices as quantized information bits.
abstract: Superconducting digital devices can be advantageously used in future supercomputers because they can greatly reduce the dissipation power and increase the speed of operation. Non-volatile quantized states are ideal for the realization of classical Boolean logics. A quantized Abrikosov vortex represents the most compact magnetic object in superconductors, which can be utilized for creation of high-density digital cryoelectronics. In this work we provide a proof of concept for Abrikosov-vortex-based random access memory cell, in which a single vortex is used as an information bit. We demonstrate high-endurance write operation and two different ways of read-out using a spin valve or a Josephson junction. These memory cells are characterized by an infinite magnetoresistance between 0 and 1 states, a short access time, a scalability to nm sizes and an extremely low write energy. Non-volatility and perfect reproducibility are inherent for such a device due to the quantized nature of the vortex.
authors.affiliation: Department of Physics, Stockholm University, AlbaNova University Center, SE-10691 Stockholm, Sweden.
authors.forename: T
authors.initials: T
authors.lastname: Golod
authors.affiliation: Department of Physics, Stockholm University, AlbaNova University Center, SE-10691 Stockholm, Sweden.
authors.forename: A
authors.initials: A
authors.lastname: Iovan
authors.affiliation: Department of Physics, Stockholm University, AlbaNova University Center, SE-10691 Stockholm, Sweden.
authors.forename: V M
authors.initials: VM
authors.lastname: Krasnov