Consider a superconductor with an energy gap of . Find the maximum wavelength of electromagnetic radiation which will be absorbed by this superconductor.
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The frequency of the longitudinal optical phonon for at the centre of the first Brillouin zone is
. Calculate the interatomic force constant for this material. (The atomic weight of
and
)
A metal has an fcc structure, a lattice parameter , and a valence
. Calculate its Hall coefficient.
What is the probability that a donor atom at energy ED is ionized?
एक एकसंयोजक धातु की संरचना bcc है और उसका जालक स्थिरांक है। उसकी फर्मी ऊर्जा परिकलित करें।
The potential energy of the Neon crystal is described by the expression:
where and
. Calculate the lattice parameter of the Neon crystal (fcc structure).
In which of the following ions do you expect angular momentum quenching and why:
In a p-n junction in Si, . Calculate the built in potential for Si at
if ni for Si at
.