## Solid state physics |

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Page 49

temperature (Chapter 23), and at very low temperatures it drops below the

electronic

out these two

the ...

temperature (Chapter 23), and at very low temperatures it drops below the

electronic

**contribution**, which only decreases linearly with T. In order to separateout these two

**contributions**it has become the practice to plot c,./T against T\ for ifthe ...

Page 250

Since the number of electrons per unit volume in the volume element dk is g(k) dk

/4n3, the current density in a band is13 Cdk \= -e\—3y(k)g. (13.23) Each partially

filled band makes such a

Since the number of electrons per unit volume in the volume element dk is g(k) dk

/4n3, the current density in a band is13 Cdk \= -e\—3y(k)g. (13.23) Each partially

filled band makes such a

**contribution**to the current density; the total current ...Page 463

the

branch will contribute nhcoE ehiaElkBT _ j (23.28) to the thermal energy density

in the Einstein approximation, so if there are p such branches there will be an ...

the

**contribution**of the acoustic branches to the specific heat.15 Each opticalbranch will contribute nhcoE ehiaElkBT _ j (23.28) to the thermal energy density

in the Einstein approximation, so if there are p such branches there will be an ...

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### Contents

The Dmle Theory of Metals | 1 |

The Sommerfeld Theory of Metals | 29 |

Failures of the Free Electron Model | 57 |

Copyright | |

48 other sections not shown

### Other editions - View all

Solid State Physics: Advances in Research and Applications, Volume 42 Henry Ehrenreich Limited preview - 1989 |

### Common terms and phrases

alkali atomic band structure Bloch boundary condition Bragg plane Bravais lattice Brillouin zone calculation carrier densities Chapter coefficients collisions conduction band conduction electrons contribution crystal momentum crystal structure density of levels dependence described determined Drude effect electric field electron gas electron-electron electronic levels energy gap equilibrium example Fermi energy Fermi surface Figure frequency given Hamiltonian hexagonal holes impurity independent electron approximation insulators integral interaction ionic crystals ions lattice planes lattice point linear magnetic field metals motion nearly free electron neutron normal modes Note number of electrons one-electron levels orbits periodic potential perpendicular phonon Phys plane waves primitive cell primitive vectors problem properties quantum reciprocal lattice vector region result scattering Schrodinger equation semiclassical semiclassical equations semiclassical model semiconductors simple cubic solid solution specific heat sphere spin superconducting symmetry temperature term thermal tight-binding valence valence band vanishes velocity wave functions wave vector zero