- #1
MementoMori96
- 13
- 0
Hi, in laboratory i had a sample of Ge with p-doping. In a first place i have done different measure V vs I (first image)
Then i insert the sample in a magnetic field perpendicular to the sample.
And i have done measure of V vs B (with a fixed current at 8 mA) and i obtained the second image.
As you can see at B = 0 the R is lower than the resistance of the first graph. Why ?
I suppose this third image
The is an accumolation of positive charges at right and so we measure a lower Voltage with a lower resistance
Can be this correct?
Then i insert the sample in a magnetic field perpendicular to the sample.
And i have done measure of V vs B (with a fixed current at 8 mA) and i obtained the second image.
As you can see at B = 0 the R is lower than the resistance of the first graph. Why ?
I suppose this third image
The is an accumolation of positive charges at right and so we measure a lower Voltage with a lower resistance
Can be this correct?