Solid State PhysicsThis book provides an introduction to the field of solid state physics for undergraduate students in physics, chemistry, engineering, and materials science. |
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Page 3
... Drude model , however , we shall simply assume ( and in many metals this assumption can be justified ) that when atoms of a metallic element are brought together to form a metal , the valence electrons become detached and wander freely ...
... Drude model , however , we shall simply assume ( and in many metals this assumption can be justified ) that when atoms of a metallic element are brought together to form a metal , the valence electrons become detached and wander freely ...
Page 9
... Drude's time it was natural to estimate vo from classical equipartition of energy : mvo2 KBT . Using the known electronic mass , we find a vo of order 107 cm / sec at room tem- perature , and hence a mean free path of 1 to 10 Å . Since ...
... Drude's time it was natural to estimate vo from classical equipartition of energy : mvo2 KBT . Using the known electronic mass , we find a vo of order 107 cm / sec at room tem- perature , and hence a mean free path of 1 to 10 Å . Since ...
Page 52
... Drude by a factor of order kÅT / & F ; the correct estimate of v2 is not the classical thermal mean square velocity of order kg T / m , but vp2 = 28F / m , which is larger than the classical value by a factor of order & F / kBT ...
... Drude by a factor of order kÅT / & F ; the correct estimate of v2 is not the classical thermal mean square velocity of order kg T / m , but vp2 = 28F / m , which is larger than the classical value by a factor of order & F / kBT ...
Contents
The Drude Theory of Metals | 1 |
The Sommerfeld Theory of Metals | 29 |
Failures of the Free Electron Model | 57 |
Copyright | |
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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 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 k-space k₂ 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 Schrödinger 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