Lecture | Date | Argument | Details |
1-2 | 28/09/2009; 9-11 | Transport of noninteracting electrons [Ch. 1, 2, 3] | Introduction to the Course; references. The Drude theory of metals: basic assumptions (noninteracting and free electrons; relaxation time). DC electrical conductivity. Hall effect and magnetoresistance (Ch. 1, first part) |
3-4 | 29/09/2009; 9-11 | " | Drude theory: AC electrical conductivity; dielectric function and plasma frequency. |
5-6 | 05/10/2009; 9-11 | " | Thermal conductivity and Wiedemann-Franz law. Seebeck effect: predicted thermopower and failure of the Drude theory. (Ch. 1, second part). Exercises (from Ch. 1) |
7-8 | 06/10/2009; 9-11 | " | The Sommerfeld theory of metals-I: Fermi-Dirac distribution; ground state of free and indep. electron gas; Fermi momentum; energy; temperature; derivation of predicted bulk modulus and comparison with experiments. [Ch. 2 (not section 2: derivation of the FD distribution)] |
9-10 | 12/10/2009; 9-11 | " | The Sommerfeld theory of metals-II: Integrals in energy and k space: density of states, physical meaning; chemical potential; derivation of the Sommerfeld expansion (from Landau, Course of Theoretical Physics, Pergamon, volume 5, Statistical Physics, Part I (if III edition, see p. 169-170); use of Sommerfeld expansion; electronic contribution to the specific heat) [Ch. 2] |
11-12 | 13/10/2009; 9-11 | " | Exercises (n. 3 of Ch. 2 of the textbook: The classical limit of Fermi-Dirac statistics; initial part of n. 4 of the collection on this web site: One-dimensional electron gas) |
13-14 | 19/10/2009; 9-11 | " | Exercises (complete the One-dimensional electron gas; different possible derivations of the Density of states (also with the delta-function); energy-density relations and DOS for free electron in 1D, 2D, 3D) |
15-16 | 20/10/2009; 9-11 | Lattices and crystalline structures [Ch. 4,5,6]. | Sommerfeld theory of metals-III: thermal properties; conduction; summary and review: basic assumptions, successes and failures of the free electron model. [Ch. 2 & 3]. Introduction to lattice structures: Bravais lattices and crystalline structures in real space; Wigner-Seitz cells. (a few slides) |
17-18 | 21/10/2009; 9-11 | " | Lattices with basis. Packing fraction [Ch. 4]. Reciprocal lattices, Brillouin zone. [Ch. 5] |
19-20 | 26/10/2009; 9-11 | " | Families of lattice planes, Miller indices [Ch. 5]. X-ray diffraction: Bragg and von Laue. [Ch. 6]. (a few slides). A web site with many structures. |
21-22 | 27/10/2009; 9-11 | " | Structure factors (end of Ch. 6). Exercises on Ch. 4-5-6. |
23-24 | 29/10/2009; 9-11 | Independent electrons in a periodic potential: exact results and approximations [Ch. 8, D, F, 9, 10]. | Periodic potential: Bloch theorem (Ch. 8). |
25-26 | 9/11/2009; 9-11 | " | Consequences of the Block theorem: quasi-crystalline momentum; velocity; energy bands; Fermi surfaces. (Ch. 8) |
27-28 | 10/11/2009; 9-11 | " | Density of states; different approaches. Derivation of the DOS using the properties of the delta-function (one slide) Alternative derivation of the DOS of 3D free electrons from the general expression; Ex. 2 Ch. 8. Effects of a weak perturbing potential (nearly free electrons): non degenerate case. |
- | 12/11/2009; 8.30-11 (Building C11, Room A2 (III floor)) | " | I part - WRITTEN TEST (Ch. 1-7) |
29-30 | 16/11/2009; 9-11 | " | More on: Effects of a weak perturbing potential (degenerate case; two-levels system). [Ch. 9] Summary (two slides) |
31-32 | 17/11/2009; 9-11 | " | More on: Effects of a weak perturbing potential. Band index and folding. Exercises on Bloch electrons: bands of free electrons in FCC structure (resolved problem; pdf file) |
33-34 | 23/11/2009; 9-11 | " | The tight-binding approach. General formulation [first part of Ch. 10] |
35-36 | 24/11/2009; 9-11 | " | Tight-binding: particular examples (s-bands for 1D, 2D, 3D cubic lattices) and exercises [Ch. 10, except Wannier]. |
37-38 | 26/11/2009; 11-13 | " | Notes on the weak periodic potential: the geometrical structure factor in elemental crystals with lattices with a basis. General remarks on the tight-binding method. Exercises on: Bloch electrons, weak periodic potential and tight binding. |
39-40 | 27/11/2009; 11-13 | Semiclassical transport of Bloch electrons in electrical and magnetic fields | Validity of semicl. dynamics. Equations of motions. Liouville theorem. Filled bands. Holes. [first part of Ch. 12] |
41-42 | 30/11/2009; 9-11 | " | Orbits in r and k space. Motion of electrons in uniform and static el. and/or magn. fields. [Ch. 12] (a few slides) . |
43-44 | 1/12/2009; 9-11 | " | Motion of electrons in perpendicular uniform and static el. and magn. fields. Exercises. |
45-46 | 3/12/2009; 9-11 | Boltzmann equation | Boltzmann eq. - I part: Ch. 13 only Introduction; Ch. 16: Sect. IV (The Boltzmann eq.); Sect. I (Source of el. scattering); Ch. 16: Sect. II (Scattering prob. and relaxation time); Sect. III (Rate of change of the distribution function due to collisions). Ex. 16.2 |
47-48 | 14/12/2009; 9-11 | " | Boltzmann eq. - II part: Ch. 13 Sect. IV (DC Electric conductivity); ex. 16.3. Other exercises on Bloch electrons (Ch. 12) |
- | 15/12/2010; 9-12 (Phys. Dept., Room D) | " | II part - WRITTEN TEST (Ch. 8 - 16) |
- | 14/01/2010; 9-10:30 | " | Correction of the II WRITTEN TEST |
- | 25/01/2010; 9-12 (Phys. Dept., Room B) | " | FINAL WRITTEN TEST |
- | 18/02/2010; 9-12 (Phys. Dept., Room D) | " | FINAL WRITTEN TEST |
- | 17/06/2010; 9-12 (Phys. Dept., Miramare, Room 204) | " | FINAL WRITTEN TEST |
- | 12/07/2010; 9:30-12:30 (Phys. Dept., Miramare, Room 204) | " | FINAL WRITTEN TEST |
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Exams:
Two written tests (partial: on the first and on the second half
of the program) or one final written exam + final oral exam.
Dates to be agreed with students (6 times per academic
year, according to the rules of the
"Regolamento didattico di Ateneo"). Typically 3 hours available
for the final written tests. You can bring with you books, lecture notes...
Examples of past written intermediate tests and final exams:
Test.I 2006
Test.I 2007
Test.I 2008
Test.I 2009
Test.II 2006
Test.II 2008
Test.II 2009
Final exam 12-01-2007
Final exam 11-04-2007
Final exam 25-01-2010
Last modified: January 2010