Introduction to Solid State PhysicsProblems after each chapter. |
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Page 141
... phonons . If the forces between atoms were purely harmonic , there would be no mechanism for collisions between different phonons , and the mean free path would be limited solely by collisions of a phonon with the crystal boundary , and ...
... phonons . If the forces between atoms were purely harmonic , there would be no mechanism for collisions between different phonons , and the mean free path would be limited solely by collisions of a phonon with the crystal boundary , and ...
Page 142
... phonons in which the total wave vector of the phonons is conserved , as in the collision ( 6.50 ) kik2 k3 , = two phonons 1 and 2 colliding to give rise to a single phonon 3. Col- lisions of this type do not change the direction of ...
... phonons in which the total wave vector of the phonons is conserved , as in the collision ( 6.50 ) kik2 k3 , = two phonons 1 and 2 colliding to give rise to a single phonon 3. Col- lisions of this type do not change the direction of ...
Page 149
... phonons are of great importance . At room temperature the relaxation time of phonon - phonon col- lisions is of the order of , from Table 6.5 , = Tpp Ap / Up ≈ ≈ 10-6 / 105 ≈ 10-11 sec , while , from Table 10.1 , we see the ...
... phonons are of great importance . At room temperature the relaxation time of phonon - phonon col- lisions is of the order of , from Table 6.5 , = Tpp Ap / Up ≈ ≈ 10-6 / 105 ≈ 10-11 sec , while , from Table 10.1 , we see the ...
Contents
DIFFRACTION OF XRAYS BY CRYSTALS | 44 |
CLASSIFICATION OF SOLIDS LATTICE ENERGY | 63 |
ELASTIC CONSTANTS OF CRYSTALS | 85 |
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absorption acceptors alkali alloys approximately atoms axes axis barium titanate boundary Bragg Brillouin zone calculated chapter charge conduction band conduction electrons crystal structure cube cubic Curie point Debye density dielectric constant diffraction diffusion dipole direction discussion dislocation distribution domain effective mass elastic electric field energy equation equilibrium exciton experimental F centers factor Fermi ferroelectric ferromagnetic free electron frequency germanium given heat capacity hexagonal holes impurity interaction ionization ions lattice constant lattice point levels low temperatures magnetic field magnetic moment metals molecules motion nearest neighbor normal observed p-n junction paramagnetic particles phonons Phys physics plane polarizability polarization positive potential Proc region resonance result room temperature rotation semiconductor Shockley shown in Fig sodium chloride solid solution space group specimen spin superconducting surface susceptibility symmetry Table theory tion transition unit volume vacancies valence band values vector velocity wave functions wavelength x-ray zero