Device modelling of MgO-barrier tunnelling magnetoresistors for hybrid spintronic-CMOS

Zuo, S., Nazarpour, K. and Heidari, H. (2018) Device modelling of MgO-barrier tunnelling magnetoresistors for hybrid spintronic-CMOS. IEEE Electron Device Letters, 39(11), pp. 1784-1787. (doi:10.1109/LED.2018.2870731)

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Abstract

Spintronic sensors, that are based on the tunnellingmagnetoresistive (TMR) effect, have been utilized in detecting low magnetic fields. However, still no computer-based model of these devices is available to integrated circuit designer to implement them in a hybrid spintronic-CMOS system. We developed a finite element method (FEM)-based model of a MgO-barrier TMR device in COMSOL Multiphysics®. The parameters of this model were extracted from the state-of-the-art fabrication and experimental data. Results were compared with respect to the model geometry and the used material. The proposed TMR sensor model offers a linear response with a high TMR ratio of 233% at 10 mV power supply. The model was exported to Cadence© Spectre to create a compact model using Verilog-A language. The developed sensor model was simulated with its analog front-end in same environment. This model provided a reliable benchmark for modelling of the future hybrid spintronic-CMOS developments.

Item Type:Articles
Additional Information:The work of KN is supported by grants EP/N023080/1 and EP/R004242/1 from EPSRC, UK.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Heidari, Dr Hadi and Zuo, Siming
Authors: Zuo, S., Nazarpour, K., and Heidari, H.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:IEEE Electron Device Letters
Publisher:IEEE
ISSN:0741-3106
ISSN (Online):1558-0563
Published Online:17 September 2018
Copyright Holders:Copyright © 2018 Crown Copyright
First Published:First published in IEEE Electron Device Letters 39(11):1784-1787
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
3028770Magnetic Diagnostics Setup for Lab-on-Chip ApplicationHadi HeidariThe Royal Society (ROYSOC)RSG\R1|180269ENG - Electronics & Nanoscale Engineering