Hall Effect: No hall voltage in a Copper sample.

[RedMech]

I have been carring out an experiment in which I have to measure the hall voltage in two samples given to me, which are Bismuth and Copper. The Hall voltage values of Bismuth come out as expected but when I measure hall voltage in the copper sample, I do not get any changes in the hall voltage, even when current through the sample is incresed. Why is this this?

 

[Baluncore]

The reason may depend on your experimental procedure. Please specify a publication that describes the procedure you are using.