Solid State Physics Course (Physics 4309-5304) Lectures
Note: Some Lectures (Power Point) are under construction!
is to post a lecture before we discuss a topic in class, but I can't promise!

All lectures are copyrighted by C.W. Myles!
No reproduction &/or use of them other than by students in this course is allowed!

Energy Bands
(Material from Kittel's Ch. 7 & MANY other sources. Some energy band lectures on are based on those prepared for the
course Physics 5335, Semiconductor Physics, which is taught in the Fall of even numbered years. It was last taught in
Fall, 2010  & will be taught again in Fall, 2012. The electronic bandstructure lectures from that course are Here. ) 

The Physical Origin of Bands & Gaps
Reduction of the Many Body Problem to a One-Electron Problem
Part I: The Physics of Energy Bands & Gaps.
              The "Physicist's" & "Chemist's" Viewpoints.
Part II: Reduction to an Effective 1-e- Problem.
                Core & Valence e- Separation. 
             Adiabatic (Born-Oppenheimer) Approximation.
             Mean Field Approximation.
Part III: Bloch's Theorem. 1-Dimensional Model Bandstructures.
              The Krönig-Penney Model: An Exactly Solvable Model.
Part IV: 1-Dimensional "Almost Free" eBands.
               Newton's 2nd Law.  Effective Masses.

Realistic Bandstructures
Mostly Semiconductors
Part V: The "Physicist's" Viewpoint.
               Free e- & The "Empty Lattice" Approximation.
               "Almost Free" eBands, as Discussed by Kittel.
             A very good Lecture on "Nearly Free" e- Theory. Found on the Web. 
             Authored by Prof. Tony Harker, University College, London
               The Orthogonalized Plane Wave (OPW) Method. 
Part VI: Outline of the Pseudopotential Method.
Part VII: Spin-Orbit Coupling Effects.
                    We had no time to discuss this in class!
Part VIII: The "k-dot-p" (Kane) Method.
                     A Method for Approximately Calculating Semiconductor
                  Bands with a Hand-Held Calculator!!
                  We had no time to discuss this in class

Tightbinding or LCAO Bandstructure Theory
Part IX: The "Chemist's" Viewpoint.
                Introductory Discussion. Brief Molecular Physics Overview.
                Molecular Orbitals. Bonding & Antibonding States.
Part X: Outline of the Tightbinding (LCAO) Method.
               Model Calculations
                  1 Dimensional Monatomic Chain.
                  1 Dimensional Diatomic Chain.
Part XITightbinding Theory for Real Crystals.
                 Brief Discussion of Realistic 3 Dimensional Tightbinding Theory.
                 There was only a short time to discuss this

<< Physics 4309-5304 Lecture Page

<< Charles W. Myles' Homepage