Tell me more ×
Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. It's 100% free, no registration required.
up vote 4 down vote favorite
2

Why is the value of Hall conductance directly proportional to the number of edge channels in the sample?

share|improve this question
I think the reason this has gotten no response is because it's unclear what the OP already knows. It seems like if the OP knows words like "edge channels" then they should know the answer already...? – genneth Oct 21 '12 at 18:29

1 Answer

up vote 3 down vote

In fact, the value of Hall conductance is NOT proportional to the number of edge channels in the sample. For example, $\sigma_{xy}=\frac13 \frac{e^2}{h}$ FQH state has one edge channel, and $\sigma_{xy}=\frac25 \frac{e^2}{h}$ FQH state has two edge channels.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.