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PHY 521/321: Condensed Matter Physics I
Prof. S. Teitel stte@pas.rochester.edu  Spring 2010
Lecture Notes
My hand written class lecture notes are being scanned and uploaded for you to view. Please be warned that these are the notes I prepare for myself to lecture from  they are not in general carefully prepared for others to read. I make no guarantees about their legibility, or that they are totally free of errors. I hope, nevertheless that you will find them useful. The lectures are uploaded as pdf files, so you will need Adobe Acrobat Reader in order to read them. You can download Acrobat Reader for free here.
The lecture note files correspond roughly to the material presented in a given day's lecture. But you may on occassion find the end of one day's lecture at the start of the file for the next day's lecture, so please look there if you think there might be something missing.
 Lecture 1  What is condensed matter physics? metals, Drude model, dc electric conductivity
 Lecture 2  Hall effect, magnetoresistance, ac electric conductivity, EM wave propagation in metals, plasma frequency
 Lecture 3  Thermal conductivity, WeidemannFranz law, thermoelectric effect
 Lecture 4  Sommerfeld model, quantum ground state of free electron gas, Fermi surface and Fermi energy, ground state energy, density of states
 Lecture 5  Density of states, pressure, bulk modulus, ideal fermi gas at finite temperature, temperature dependence of the chemical potential
 Lecture 6  Specific heat of electron gas, transport properties within the Sommerfeld model
 Lecture 7  Magnetic properties: Pauli paramagnetism, Landau levels for orbital motion
 Lecture 8  Landau diamagnetism at T=0
 Lecture 9  Landau diamagnetism continued, de Haas  van Alphen effect, screening by the electron gas, ThomasFermi dielectric function
 Lecture 10  ThomasFermi dielectric function continued, classical DebyeHuckle dielectric function
 Lecture 11  Lindhard dielectric function, Friedel (RudermanKittel) oscillations, Kohn effect, RKKY interaction and the spin glass
 Lecture 12  Plasmons, Wigner crystal
 Lecture 13  Cooper pairs
 Lecture 14  Bravais lattices and crystal structures
 Lecture 15  Reciprocal lattice, Bragg condition for Xray scattering
 Lecture 16  von Laue condition for Xray scattering, preview of electrons in ionic potential, geometric and atomic structure factors
 Lecture 17  Electrons in a crystal  qualitative arguments: Bloch's theorem, energy gaps at Bragg planes, Brillouin zones, Bornvon Karmen boundary conditions for a Bravais lattice
 Lecture 18  Fourier transforms on a Bravais lattice, Schrodinger's equation for electrons in a periodic potential, Bloch's theorem more rigorously, crystal momentum and band index, reduced, repeated, and extended zone schemes for electronic band structure, average velocity of a Bloch electron state
 Lecture 19  Density of states, van Hove singularities, weak potential approximation for electron eigenstates, velocity near a Bragg plane
 Lecture 20  Band structure in the weak potential approximation, metals and insulators, Bravais lattice with a basis, Brillouin Zones and the Fermi surface
The 2D Brillouin Zones in living color
 Lecture 21  Tight binding approximation for band structure, the sband
 Lecture 22  Tight binding hybridization of atomic orbitals, band structure of graphene
 Lecture 23  Tight binding band structure of graphene continued, Wanier functions
 Lecture 24  Spinorbit interaction, some discussion of real metals
 Lecture 25  Semiclassical equations of motion, effective mass, holes, Bloch oscillations
 Lecture 26  Motion in perpendicular electric and magnetic fields, Hall effect and magnetoresistance from closed orbits
 Lecture 27  Effect of open orbits on Hall coefficient and magnetoresistance, normal modes of ion lattice vibration
 Lecture 28  Acoustic and optical phonons, BornOppenheimer approximation and the BohmStaver relation for the speed of sound

