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Before the quantum revolution, we didn’t really understand why a diamond is transparent but lead is opaque, or why copper conducts electricity while glass doesn't. Classical physics treated atoms like little billiard balls, but that couldn't explain the "magic" of materials. The Hero: Charles Kittel quantum theory of solids kittel pdf best
Kittel hides a lot of the "heavy lifting" math in the back. If a quantum derivation in the chapter seems to jump a few steps, the answer is usually in the appendix. Before you commit to hunting down the PDF,
Spin waves (magnons), exchange interactions, and magnetic resonance. Transport Theory: The Hero: Charles Kittel Kittel hides a lot
: Examines Fermi surfaces and electron wavefunctions in metals, alloys, and semiconductors, including group theoretical descriptions of Brillouin zones .
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