« previous next »
Pages: [1]   Go Down

Author Topic: Help! How to calculate the TMR values of Co2MnSi/MgO/Co2MnSi MTJ?  (Read 3288 times)

0 Members and 1 Guest are viewing this topic.

Offline Yu Hailin

  • Regular QuantumATK user
  • **
  • Posts: 15
  • Reputation: 0
    • View Profile
Help! How to calculate the TMR values of Co2MnSi/MgO/Co2MnSi MTJ?
« on: January 20, 2011, 16:09 »
Dear all,
     I have read a document about ATK (ATK_TutorialSession_Part2_Analysis.pdf, This document is easily downloaded by google search) and I am interesting for the calculation of TMR value (shown on page 26 of the document). But I am confused on the calculation of TMR when the bias voltage is zero. For zero bias voltage, there is no current. So it is hard to undertand.
Anyone can give me some advices? If you have the script, please give me (my e-mail: yuhailin@student.sysu.edu.cn).Thanks in advance!
Sincerely!
Yu Hailin
Logged

Offline ugglebot

  • Regular QuantumATK user
  • **
  • Posts: 22
  • Country: se
  • Reputation: 1
    • View Profile
Re: Help! How to calculate the TMR values of Co2MnSi/MgO/Co2MnSi MTJ?
« Reply #1 on: January 24, 2011, 09:37 »
The TMR is defined from the conductance rather than the current, and the conductance is well-defined even at zero bias.
Logged

Offline nori

  • QuantumATK Guru
  • ****
  • Posts: 122
  • Reputation: 12
    • View Profile
Re: Help! How to calculate the TMR values of Co2MnSi/MgO/Co2MnSi MTJ?
« Reply #2 on: January 27, 2011, 05:14 »
Quote
If you have the script, please give me
Attached is the sample structure of Co2MnSi/MgO/Co2MnSi for ATK 10.8.
Please enjoy  ;)
Logged

Offline kstokbro

  • Supreme QuantumATK Wizard
  • *****
  • Posts: 392
  • Reputation: 13
    • View Profile
    • QuantumWise
Re: Help! How to calculate the TMR values of Co2MnSi/MgO/Co2MnSi MTJ?
« Reply #3 on: January 29, 2011, 07:56 »
You can also take the tutorial
Tutorial: spin transport in Fe-MgO-Fe
available from our website
Logged
Pages: [1]   Go Up
« previous next »