I have read that I can use the two and four probe techniques; however, I do not understand how it is obtained a resistivity value from the I-V curve (since it is not a straight line).
Thank you for replying. However, I have read some papers where the I-V curve is not an straigth line, instead it is more like an exponential. In this way, I will get different values for R if I take diferent point in the IV curve.
Here is the paper that I mention
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