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2015 ; 6
(ä): 8628
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Single Abrikosov vortices as quantized information bits
#MMPMID26456592
Golod T
; Iovan A
; Krasnov VM
Nat Commun
2015[Oct]; 6
(ä): 8628
PMID26456592
show ga
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.