NEW: Lecture 20 - Superconductivity
     Lecture 19 - Magnetic Order
NEW: Lecture 18 - Magnetism
     Lecture 17 - Waves in Xtal
     Homework 09
UPD: Midterm (new due date; addendum for the last problem)
NEW: Homework 08
     Midterm
     Lecture 15,16 - Semiconductors
NEW: Lecture 14 - Note - Counting k
UPD: Homework 07 (change of due date)
     Homework 06 (changes in the bonus problem)
NEW: Lecture 13 - Semi-Classical EOM, Semiconductors
UPD: Homework 06 (correction of typos in 1(d),2(d),3(a))
NEW: Homework 06
     Lecture 12 - AE Electron Band Theory II
UPD: Homework 04 (correction for that bonus problem)
NEW: Lecture 11 - Note - Absolute Essence of NFE, TBE Models
     Lecture 11 - Note - NFEM
     Lecture 11 - AE Electron Band Theory I
UPD: Lecture 09,10 - Bloch Theorem, Energy Bands (file re-named)
     Lecture 09 - Note - Bloch Theorem (some new technical comments inserted)
NEW: Homework 05
     Lecture 09,10 - Electrons in Crystal
UPD: Lecture 09 - Note - Bloch Theorem (proof-read and improved -- read this!)
MSG: Please read Bloch theorem handout before next class.
     I may pick one group to present.
     Feel free to volunteer.
MSG: (Change) All homeworks are due by the end of that day
     (by next morning, really), not by class time.
     Feel free to get help from me, if necessary.
     I am generally available Thursday after class (by 4pm).
NEW: Homework 04 (Sorry to be slow on this -- due one week late;
                  Note an optional bonus problem.)
     Lecture 09 - Note - Bloch Theorem
     Lecture 08 - Free Electron Theory (will cover last three pages next class)
NEW: Lecture 07 - Phonon Dynamics (forgot to upload right after lecture, sorry)
NEW: Lecture 06 - Phonon Dynamics
     Homework 03
NEW: Lecture 05 - Crystal Dynamics
     Lecture 05 - Note - Normal Modes
NEW: Lecture 04 - WIC, Intro to Phonons
     Homework 02
NEW: Lecture 03 - Waves In Crystal
UPD: 00 - Syllabus (Lecture 03 reading materials)
     Lecture 02 - Basic Xtallography (slide 15)
UPD: Lecture 01 - Footnote - Why no 3 C basis in graphene (file name and doc title)
NEW: Lecture 02 - Basic Xtallography
NEW: Lecture 01 - Footnote - Why three atom basis is not allowed for graphene
     Homework 01
     00 - Physical Constants
UPD: Lecture 01 - Basic Xtallography (ccc -> ccp)
NEW: Lecture 01 - Basic Xtallography