Superparamagnetic perpendicular magnetic tunnel junctions for true random number generators
AffiliationUniv Arizona, Dept Phys & Astron
MetadataShow full item record
PublisherAMER INST PHYSICS
CitationAIP Advances 8, 055903 (2018); doi: 10.1063/1.5006422
Rights© Author(s) 2017. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at firstname.lastname@example.org.
AbstractSuperparamagnetic perpendicular magnetic tunnel junctions are fabricated and analyzed for use in random number generators. Time-resolved resistance measurements are used as streams of bits in statistical tests for randomness. Voltage control of the thermal stability enables tuning the average speed of random bit generation up to 70 kHz in a 60 nm diameter device. In its most efficient operating mode, the device generates random bits at an energy cost of 600 fJ/bit. A narrow range of magnetic field tunes the probability of a given state from 0 to 1, offering a means of probabilistic computing. (C) 2017 Author(s).
Note12 month embargo; published online: 7 December 2017
VersionFinal published version
SponsorsC-SPIN, one of the six centers of STARnet, a Semiconductor Research Corporation program; MARCO; DARPA [2013-MA-2831]; NSF [ECCS-1709845]