Giant Piezoresistance Effect of Asymmetric Ferroelectric Tunnel Junction: a Monte Carlo study

2019 5th International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Zeng, Kangshi^1 ; Guo, Xinpei^2 ; Xu, Zhen^3 ; Xiong, Tianbai^4

School of Science, Xihua University, Chengdu

610039, China^1

Nanjing Forestry University, Nanjing

210037, China^2

Monash University, Caulfield East

VIC

3145, Australia^3

School of Materials and Energy, Guangdong University of Technology, Guangzhou

510006, China^4

关键词: Axial pressures;    Different thickness;    Ferroelectric tunnel junctions;    Monte Carlo simulation methods;    Piezoresistance effects;    Two-dimensional ising model;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/295/4/042054/pdf
DOI  :  10.1088/1755-1315/295/4/042054

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Using two-dimensional Ising model and Monte Carlo simulation method, the giant piezoresistance effect (GPE) of ferroelectric tunnel junction (FTJ) is studied. Under different axial pressures, the changes of polarization for different thin ferroelectrics film were simulated. The relationship between pressure and resistance of asymmetric FTJ was numerically investigated. Using this relationship, the giant piezoelectric resistance effect of asymmetric FTJ under different thickness was calculated and discussed. The resistance of FTJ increased at least with an order of magnitude, under the condition of 5 GPa pressure.