Each student should make one post on the blog each week and write a comments on three other student posts, in order to gain formative assessment points.
This does not have to be profound. e.g. A simple summary of one key idea, equation, or experimental data graph is fine.
This does not have to be profound. e.g. A simple summary of one key idea, equation, or experimental data graph is fine.
Here are a few ideas you might post about:
the integer quantum Hall effect
the fractional quantum Hall effect
the quantum of resistance
what are the main assumptions of the Drude model?
what are the differences between the Drude, Sommerfeld, and Bloch models?
who were Drude, Sommerfeld, and Bloch?
Also, here are a few good examples from last year
I can't work out how to do my own posts so I am putting mine in here.
ReplyDeleteThe quantum hall effect was the highlight of this week.
I had to see how fractional hall effect compared. This is a nice simple summary:
http://www.nobelprize.org/nobel_prizes/physics/laureates/1998/press.html
There is a nice graph that is the fractional version of what we saw in the lecture. Unfortunately its uglier than the integer version.
The discovery came after moving the original experiment into colder regimes with stronger magnetic fields and the result was unexpected.
Im interested in the details of why the result was unexpected. It seems like the two explanations can't be significantly different!
The fractional version certainly seems more exciting! The fractions are the minima of the curve.
ReplyDeleteCurious as to what conditions exist for the fraction and their consequences. From their 1999 review, rational fraction seems theoretically possible. Their further conditions/observations is a bit of a headful at the moment!
I like how in 1985 the Nobel prize was for integer quantum Hall effect, then in 1998 for fractionally charged excitations. Now we just irrational or imaginary?