Messages

1

General Questions and Answers / How to obtain I–V curves for MTJ devices (parallel and antiparallel states)

« on: November 20, 2025, 12:14 »

Hi everyone,
I am working on MTJ (magnetic tunnel junction) devices and I would like to calculate the I–V characteristics for both P and AP magnetic configurations.
I have a few questions:
1. Which calculator and settings should I use to obtain the I–V curves for MTJ devices?
• For example, what type of calculator is appropriate and what are the important settings (k-point sampling, bias range, etc.) for reliable I–V results?
2. Is it a good approach to first calculate the transmission spectra  and then use a Python script to compute the I–V curve from the transmission data?
3. Or is it better to use the built-in “IVCharacteristic” analysis in the Workflows to directly obtain the I–V curve?
• If so, how should I set it up correctly for an MTJ device in the parallel and antiparallel states?

Thank you in advance for your guidance!

2

General Questions and Answers / TMR%

« on: October 23, 2024, 11:41 »

Hello
When we obtain the TMR value (tunnelling magnetoresistance ratio) , it is a single number, but I have seen in many articles that it is plotted as a graph, dependent on various variables. Could you please guide me on how I can create such a graph? Also, what is the variable parameter, and where in the software settings can I change it?
Thanks