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visits member for 2 years, 11 months
seen Nov 1 at 18:40

Physics Graduate student


Jul
9
comment Why is planar geometry preferred to observe ordinary Hall effect?
thanks @BebopButUnsteady
Oct
27
comment Study Quantum Physics
@Hal Swyers thank you for giving insight into importance of heat equation in understanding the Schrodinger equation. I wish I could get free e-copy of this book "who is fourier" else i will try buying it.
Oct
21
comment Reference for understanding characteristic length and time scales in a system (in particular electronic transport)
thank you for such informative reply:)
Oct
21
comment Reference for understanding characteristic length and time scales in a system (in particular electronic transport)
@DavidZaslavsky thank you for the suggestion. I will keep that in mind.
Oct
10
comment Derivation of Schrodinger equation for a system with position dependent effective mass
I have come across this equation in Hamaguchi on page 347 <books.google.co.in/…;
Oct
10
comment Derivation of Schrodinger equation for a system with position dependent effective mass
thank you for the answer but what i am asking is how to derive it within the regime of effective mass approximation and that too when the mass has a spatial profile... for example in the case of Al/GaAs high electron mobility transistor we have a position dependent mass.
Sep
18
comment Why is the valence band maximum at the gamma point in the bandstructure view of dispersion relation?
@genneth: I think the answer to the question lies in your hint that systems with inversion symmetry have band extrema at the gamma point. For example, graphene has no inversion symmetry. I will check it out and get back to you.
Sep
18
comment Why is the valence band maximum at the gamma point in the bandstructure view of dispersion relation?
@ron maimon I am asking about the structure of the top most filled band, the valence band. In cases like graphene occurrence of band maximum is not at the Gamma point.