Jan 22 M Lecture # 1 - Evidence for crystals; Lattice and basis; Read Kittel Chapter 1: Crystal Structure 24 W Lecture # 2 - Bravias lattice, Point group, Space group. 26 F Lecture # 3 - sc,fcc,bcc,hcp; Primitive basis vectors; Primitive cells (p-cells); Wigner-Seitz cells 29 M Lecture # 4 - Miller indices, Miller planes. 31 W Lecture # 5 - Bragg diffraction (a.k.a. Bragg scattering, Bragg "reflection"); Read Kittel Chapter 2: Wave Diffraction and the Reciprocal Lattice Feb 2 F Lecture # 6 - Reciprocal lattice, k-space, First Brillouin zone. 5 M Lecture # 7 - Fourier series. 7 W Lecture # 8 - Fourier series; Read Kittel Chapter 3: Crystal Binding and Elastic Constants (skim lightly pp 73-84) 9 F Lecture # 9 - Diffraction conditions, Laue equations; Ewald construction, Structure factor. 12 M Lecture #10 - van der Waals-London dispersion force 14 W Lecture #11 - vdW binding of noble gas crystals, cohesive energy, Lennard-Jones 6-12 potential, L-J lattice sums 16 F Lecture #12 - Ionic binding, lattice energy, Madelung constant 19 M Lecture #13 - Ionic binding 21 W Lecture #14 - Bulk modulus calculation 23 F Lecture #15 - Bulk modulus calculation 26 M Lecture #16 - Exchange interaction 28 W Lecture #17 - Exchange interaction Mar 2 F Lecture #18 - Read Kittel Chapter 4: Phonons I Crystal Vibrations 5 M Lecture #19 - Midterm exam 7 W Lecture #20 - Longitudinal and transverse waves, difference equation, Fourier transform, dispersion relation 9 F Lecture #21 - Multi-atom basis, Acoustic and optical branches of the dispersion relation 12 M Spring Break 14 W Spring Break 16 F Spring Break 19 M Lecture #22 - Read Kittel Chapter 5: Phonons II Thermal Properties, Planck distribution, Bosons 21 W Lecture #23 - Phonon heat capacity, Einstein particle in cage, Debye model, Density of states 23 F Lecture #24 - ... Chapter 10: Superconductivity