When the sample is curled into a cylinder, the flux that did go off to infinity now collects along the axis and comes out the end as shown. The flux loops back outside the cylinder, penetrates the cylinder at right angle, and comes out along the axis to close the loop.
I think it's simple remember basic commutation relation [x,px] = h [y,py] = h But [px,py] = 0 [y,px] =0 [x,py] = 0 Prof. used these simple commutators to say that [py,H] = 0 . I hope you get it.
Nice introductory lecture, however putting the density of charges too close to the integer that is also at the denominator of the Hall resistance is not pedagogical at all.
you lost me right after classical hall effect, nothing wrong with the lecture, just me, I need to learn more, I was hoping for more physics and less math
Question on classical hall effect part: The Magnetic field (B) you mentioned is corrected for demagnetization effect or just the external field? Second question, whether q (charge carrier) is elementary or can it be an effective charge carrier (q_eqv) which could be quasiparticles? Thanks
When the sample is curled into a cylinder, the flux that did go off to infinity now collects along the axis and comes out the end as shown. The flux loops back outside the cylinder, penetrates the cylinder at right angle, and comes out along the axis to close the loop.
Professor speaking FACTS!!!
23:00 how do we see that py commutes with the hamiltonian? How do we see that px doesn't?
I think it's simple remember basic commutation relation [x,px] = h
[y,py] = h
But [px,py] = 0
[y,px] =0
[x,py] = 0
Prof. used these simple commutators to say that [py,H] = 0 .
I hope you get it.
Awesome lecture! Thank you, Sir!
very good one. knowledge drop!
Nice introductory lecture, however putting the density of charges too close to the integer that is also at the denominator of the Hall resistance is not pedagogical at all.
The one to the next one will not change
sir where is the other part?
excellent talk!
Perfect
I was out, when he started talking about Hamiltonians.
Awesome indeed!
you lost me right after classical hall effect, nothing wrong with the lecture, just me, I need to learn more, I was hoping for more physics and less math
What is the tiny solenoid in the gauge argument exactly ? At around time 44:36 or less ! That was not sufficiently explained POV:
What’s a length. Planck scale. Phi diameter can’t be Planck length So you have a crucial point. I guess
Question on classical hall effect part: The Magnetic field (B) you mentioned is corrected for demagnetization effect or just the external field? Second question, whether q (charge carrier) is elementary or can it be an effective charge carrier (q_eqv) which could be quasiparticles? Thanks
Seeing geometry in ancient architecture and glyph