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Introduction to Solid State Physics Phys 175A Dr. Ray Kwok SJSU What is Solid State Physics? It’s not semiconductor physics. More often it’s called Condensed Matter Physics. It’s a study of collective groups of atoms and molecules. Required knowledge of Quantum Mechanics and Statistical Physics. History defined by material Stone Age Iron Age Bronze Age Plastic Silicon next?? Superconductor? Polymer? Categorized by Structure Appearance Electrical properties Magnetical properties Optical properties Mechanical properties X-ray diffraction Development of x-ray made it possible to study crystal structure. 2d sinθ = nλ λ has to be in order of d (crystal spacing in angstroms) to see it. f = c/λ = 1018 Hz (visible light around 5 x 1014 Hz)
