Device modeling of MgO-barrier tunneling magnetoresistors for hybrid spintronic-CMOS

Siming Zuo, Kianoush Nazarpour, Hadi Heidari

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Spintronic sensors, which are based on the tunneling-magnetoresistive (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 the same environment. This model provided a reliable benchmark for modeling of the future hybrid spintronic-CMOS developments.
Original languageEnglish
Pages (from-to)1784 - 1787
Number of pages4
JournalIEEE Electron Device Letters
Volume39
Issue number11
Early online date17 Sept 2018
DOIs
Publication statusPublished - 1 Nov 2018

Keywords / Materials (for Non-textual outputs)

  • CMOS
  • COMSOL Multiphysics
  • spintronics
  • tunneling magnetoresistors,
  • Verilog-A

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