For a linear chain of identical atoms of mass calculate the maximum value of the angular frequency of the longitudinal wave and the group velocity at
, given that the inter-atomic distance is 2.0 A and the spring constant is
.
________ ____ ____ ______ ________ ___ _____.
________ _____ __________ ______ __________ __________ ______ _______ _________ ______.
_____ _____ ____ __________ __________.
_____ ___ _______ __________ _______ _____ _______.
_______ ___ ______ ______ ________ ______.
______ _______ ________ ________ ____.
_______ ________ _____ _________ _______ ________ _________.
________ ___ ______ _____ _____ _________ _________ ______.
__________ _______ ________ _________ ____ ________ _______ _______.
____ _________ _______ __________ _____ ___ _____ ______.
______ ____ _____ _______ ___ ______ _________ _________ _________ __________ __________ ___.
_______ __________ _______ ______ _____ ____.
__________ ______ __________ ___ ____ ________.
________ ___ ____ _______ ___.
______ _____ _____ _________ _____ ________ ______.
___ __________ _______ ______ ______ ________ _____ ________ __________ __________ ____.
_____ _____ ________ _________ _______ ____ _______ ________ ____.
______ ____ __________ ___ _____ _____ _________.
_________ ______ ____ ____ _____ ___ ________.
_____ ___ ________ ____ _______ __________ ________.
_________ _______ ______ _____ ______.
_______ __________ ______ ______ ___ ________ _______ __________ _________.
______ _____ _________ ___ ______ _____ ___ ______ __________ ______ _________.
_______ ______ _______ __________ _____ __________ ________ ____.
____ __________ __________ ______ ____ _____ ______ ____ ______.
____ _______.
- Solved Assignments
- Study Notes
- Guess Papers
- Question Papers
✓ Unlock up to 60% of the answer
✓ No payment required
The susceptibility of is
and its density is
. Calculate its total polarisability. Assume that the mass number for
is 32.
Calculate the temperature at which the lattice contribution to the specific heat and the electronic contribution to the specific heat become equal in a metal which has a Debye temperature of and a Fermi energy
.
Explain the significance of the pseudogap phase in cuprates.
A metallic element has a density of , a lattice constant of
and an atomic weight
. Calculate the number of atoms per unit cell of this element and predict its lattice crystal structure.
For the energy dispersion relation:
calculate the inverse mass tensor.
Show that for the superconducting transition in the absence of magnetic field, there is a discontinuity in the specific heat of a superconductor at Tc which can be written as:
In Sommerfeld free electron theory, show that at a temperature T
(i) and (ii)