Recent content by MementoMori96

Yes is close but with a Z test alpha 5% the two values are not compatible. The error bars are large due to the instruments. The temperature is the same. What do you think about my idea?

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...

I consider the error that i calculate thanks to these tables a random error, is a mistake?

Is correct to calculate the resistance of a semiconductor sample in a magnetic field with ohm’s law?

Thanks . Is possibile that these errors contain also systematic errors ?

No i’m asking how these errors are calculated. How does the company estimated these errors ?

Hi, normally when we take a measure with a multimer we consider the error given by this type of tables: http://www.transcat.com/media/pdf/mete35xp.pdf Do you know how these errors are calculated?

Anyone ?

Hi, this doubt is born because my professor has found this quadratic trend in this way (see the image) But if we fit the dates with the function that i have written before we will not find the mobility that we have measure with the usual method but mobility/2. Why?

I’m looking at http://physics.gu.se/~tfkhj/161213.pdf , is it correct? It is not so easy but at first glance it seems that the final result is not a simple function, isn’t it?

Thanks ! Have you any books or web pages in which i can deepen this topic?

Yes but how? I’m not able to find the fit theorically

Hi, we have done an experiment where we have to measure the resistance of a sample of Ge doping-p and how it changes due to a magnetic field perpendicular to the sample with a costant current. We have found that R(B) has a quadratic trend (we have fit the dates with y = a[1+b*B^2] with a and b...