Introduction to Solid State Physics |
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Page 220
... phonons to produce a third phonon at a frequency w3 = w1 + w2 . Shiren3 describes an experiment in which a beam of longitudinal pho- nons of frequency 9.20 GHz interacts in an MgO crystal with a parallel beam of longitudinal phonons at ...
... phonons to produce a third phonon at a frequency w3 = w1 + w2 . Shiren3 describes an experiment in which a beam of longitudinal pho- nons of frequency 9.20 GHz interacts in an MgO crystal with a parallel beam of longitudinal phonons at ...
Page 226
... phonon can interact : at high temperature the total number of excited phonons is proportional to T , according to ( 9 ) . The collision frequency of a given phonon should be ... Phonon Source Net flow of phonons N processes Phonon sink. 226.
... phonon can interact : at high temperature the total number of excited phonons is proportional to T , according to ( 9 ) . The collision frequency of a given phonon should be ... Phonon Source Net flow of phonons N processes Phonon sink. 226.
Page 227
... phonons toward the right end of the crystal . If only N processes ( K1 + K2 K3 ) occur , the phonon flux is unchanged in momentum on collision and some phonon flux will persist down the length of the crystal . On arrival of phonons at ...
... phonons toward the right end of the crystal . If only N processes ( K1 + K2 K3 ) occur , the phonon flux is unchanged in momentum on collision and some phonon flux will persist down the length of the crystal . On arrival of phonons at ...
Contents
CRYSTAL STRUCTURE | 1 |
CRYSTAL DIFFRACTION AND THE RECIPROCAL LATTICE | 43 |
CRYSTAL BINDING | 95 |
Copyright | |
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absolute zero absorption alkali halide alloy antiferromagnet applied field atoms axis boundary Brillouin zone calculated Chapter charge components conduction band conduction electrons crystal structure cubic density dielectric constant dielectric function diffraction dipole direction dislocation dispersion relation effective mass elastic electric field electron concentration electron gas energy gap equation equilibrium excited exciton experimental F center Fermi surface ferroelectric ferromagnetic Figure free electron frequency function given heat capacity hole impurity interaction ionic lattice constant lattice points low temperatures magnetic field magnetic moment magnon metal modes momentum motion nearest neighbors neutron normal nuclear optical orbital paramagnetic particle phase phonon Phys plane polarization positive potential primitive cell quantum reciprocal lattice vector region resonance result room temperature scattering semiconductor shown in Fig space specimen sphere superconducting theory thermal tion transition unit vacancy valence band velocity wavefunction wavelength wavevector x-ray