Thermally activated magnetization back-hopping based true random number generator in nano-ring magnetic tunnel junctions

被引：11

作者：

Qin, Jianying ^{[1
]}

Wang, Xiao ^{[1
]}

Qu, Tao ^{[2
]}

Wan, Caihua ^{[1
]}

Huang, Li ^{[1
]}

Guo, Chenyang ^{[1
]}

Yu, Tian ^{[3
]}

Wei, Hongxiang ^{[1
]}

Han, Xiufeng ^{[1
]}

机构：

[1] Univ Chinese Acad Sci, Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[2] Univ Minnesota Twin Cities, Sch Phys & Astron, Minneapolis, MN 55455 USA

[3] Sichuan Univ, Coll Phys Sci & Technol, Chengdu 610065, Sichuan, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2019年 / 114卷 / 11期

基金：

中国国家自然科学基金;

关键词：

TORQUE;

D O I：

10.1063/1.5077025

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A true random number generator based on the magnetization backhopping process in nano-ring magnetic tunnel junctions is demonstrated in this work. The impact of environmental temperature (T) and current pulse width (tau) on backhopping is investigated statistically by experiments, micromagnetic simulations, and theoretical analysis. The backhopping probability increases at high T and wide tau, as explained by the combined effect of thermal fluctuation and spin-transfer-torque noise. The magnetoresistance at backhopping is randomly distributed over a large operational current range. This manifestation of backhopping in magnetic tunnel junctions can be used as the basic unit of a true random number generator. Published under license by AIP Publishing.

引用

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