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PHY 521: Condensed Matter Physics I
Prof. S. Teitel stte@pas.rochester.edu  Spring 2014
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, free electron wavefunctions with periodic boundary conditions
 Lecture 4  Sommerfeld model, quantum ground state of free electron gas, Fermi surface and Fermi energy, ground state energy, density of states, pressure, bulk modulus, ideal fermi gas at finite temperature
 Lecture 5  Temperature dependence of the chemical potential, specific heat of electron gas, transport properties within the Sommerfeld model
 Lecture 6  Magnetic properties: Pauli paramagnetism, Landau levels for orbital motion
 Lecture 7  Landau diamagnetism at T=0
 Lecture 8  de Haas  van Alphen effect, screening by the electron gas, ThomasFermi dielectric function, classical DebyeHuckle dielectric function
 Lecture 9  Lindhard dielectric function, Friedel (RudermanKittel) oscillations, Kohn effect, RKKY interaction
 Lecture 10  RKKY interaction and the spin glass, plasmons
 Lecture 11  Wigner crystal, Cooper pairs
 Lecture 12  Bravais lattices and crystal structures
 Lecture 13  Reciprocal lattice, Bragg and von Laue formulations of Xray scattering
 Lecture 14  Xray scattering continued, Xray scattering from Bravias lattice with a basis, preview of electrons in a periodic potential
 Lecture 15  Preview continued: Bloch's theorem, energy gaps at Bragg planes, Brillouin zones, Bornvon Karmen boundary conditions
 Lecture 16  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
 Lecture 17  Reduced, repeated, and extended zone schemes for electronic band structure, average velocity of a Bloch electron state, density of states, van Hove singularities, weak potential approximation for electron eigenstates
 Lecture 18  Weak potential approximation and the band gap, velocity of electron at a Bragg plane, metals and insulators
 Lecture 19  Weak potential approximation in 2D and 3D, Bravais lattice with a basis, Brillouin Zones and the Fermi surface in the weak potential approximation
The 2D Brillouin Zones in living color
 Lecture 20  Open and closed Fermi surfaces, tight binding approximation for band structure, the sband
 Lecture 21  Fermi surface in tight binding, hybridization of atomic orbitals, variational derivation of tight binding
 Lecture 22  Tight binding band structure for graphene
 Lecture 23 Graphene continued, Wannier function, spinorbit interaction
 Lecture 24  Some discussion of real metals
 Lecture 25  Semiclassical equations of motion, Bloch oscillations, effective mass, holes
 Lecture 26  Motion in perpendicular electric and magnetic fields
 Lecture 27  Hall effect and magnetoresistance from closed and open orbits, dynamical matrix
 Lecture 28  Normal modes of ion lattice vibration, acoustic and optical modes,the BornOppenheimer approximation and the BohmStaver relation for the speed of sound
 Lecture 29  The electronphonon interaction, quantization of ion lattice vibrations, Debye model for specific heat due to lattice vibrations, electronphonon scattering and Bloch's T^{5} law for metalic resistivity

