High-Density Physical Random Number Generator Using Spin Signals in Multidomain Ferromagnetic Layer. (16th February 2015)

• Record Type: Journal Article
• Authors: Chun, Sungwoo; Lee, Seung-Beck; Hara, Masahiko; Park, Wanjun; Kim, Song-Ju
• Other Names: Lukaszew Rosa Academic Editor.
• Is Part Of: Advances in condensed matter physics. Volume 2015(2015)
• Publication Date: 2015-02-16
• Subjects: Condensed matter -- Periodicals; Condensed matter; Periodicals; 530.41
• DOI: 10.1155/2015/251819
• Languages: English
• ISSNs: 1687-8124

Abstract

Abstract : A high-density random number generator (RNG) based on spin signals in a multidomain ferromagnetic layer in a magnetic tunnel junction (MTJ) is proposed and fabricated. Unlike conventional spin-based RNGs, the proposed method does not require one to control an applied current, leading to a time delay in the system. RNG demonstrations are performed at room temperature. The randomness of the bit sequences generated by the proposed RNG is verified using the FIPS 140-2 statistical test suite provided by the NIST. The test results validate the effectiveness of the proposed RNGs. Our results suggest that we can obtain high-density, ultrafast RNGs if we can achieve high integration on the chip.