Cao, Zhen Zhang, Shuai Zhang, Jian Xu, Nuo Li, Ruofan Guo, Zhe Yun, Jijun Song, Min Zou, Qiming Xi, Li Lee, Oukjae Yang, Xiaofei Zou, Xuecheng Hong, Jeongmin You, Long 2024-01-19T15:03:34Z 2024-01-19T15:03:34Z 2021-09-04 2021-04 0741-3106 https://pubs.kist.re.kr/handle/201004/117231 A reliable design of physical unclonable function (PUF) based on spin-orbit torque (SOT) induced domain wall (DW) motion has been proposed and experimentally demonstrated. Magnetic DWs are nucleated and propagate in Ta/CoFeB/MgO heterostructures in which their device-to-device variation enables the PUF, while cycle-to-cycle variation in DW motion enables the reconfigurable design. Furthermore, field-free SOT switching has been observed in the chiral domain wall likely caused by the large Dzyaloshinskii-Moriya interaction (DMI) effect. The proposed DW motion based anti-counterfeiting device shows good promises as a CMOS-compatible PUF for hardware security. English IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC Reconfigurable Physical Unclonable Function Based on Spin-Orbit Torque Induced Chiral Domain Wall Motion Article 10.1109/LED.2021.3057638 1 IEEE ELECTRON DEVICE LETTERS, v.42, no.4, pp.597 - 600 IEEE ELECTRON DEVICE LETTERS 42 4 597 600 scie scopus 000633394000036 2-s2.0-85100854845 Engineering, Electrical & Electronic Engineering Article Magnetization Magnetic domain walls Magnetic devices Magnetic domains Physical unclonable function Saturation magnetization Programming PUF SOT DW motion security