Introduction to Solid State PhysicsProblems after each chapter. |
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Page 504
... exciton is a neutral excited mobile state of a crystal : an exciton can travel through the crystal , giving up its energy of formation on recombination , but it is electrically neutral and therefore does not contribute directly to the ...
... exciton is a neutral excited mobile state of a crystal : an exciton can travel through the crystal , giving up its energy of formation on recombination , but it is electrically neutral and therefore does not contribute directly to the ...
Page 505
... Exciton levels Energy gap Valence band continuum Fig . 18.1 . = Optical 0 ) are shown Energy levels of an exciton whose center of mass is at rest . transitions from the top of the valence band ( assumed to be at k by the arrows , the ...
... Exciton levels Energy gap Valence band continuum Fig . 18.1 . = Optical 0 ) are shown Energy levels of an exciton whose center of mass is at rest . transitions from the top of the valence band ( assumed to be at k by the arrows , the ...
Page 506
... exciton problem is considerably more complicated , but there is little doubt that bound exciton states exist for quite general energy surfaces . The exciton ground state energy is obtained on setting n = 1 in ( 18.2 ) ; this energy ...
... exciton problem is considerably more complicated , but there is little doubt that bound exciton states exist for quite general energy surfaces . The exciton ground state energy is obtained on setting n = 1 in ( 18.2 ) ; this energy ...
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 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 resonance result room temperature rotation semiconductor Shockley shown in Fig sodium chloride solid solution space group specimen spin superconducting surface susceptibility symmetry Table theory thermal tion transistor transition unit volume vacancies valence band values vector velocity wave functions wavelength x-ray zero