512 Solid State Physics

Fall Semester 2007, Tuesday and Thursday: 9:30 - 10:50 a.m. Room: physics 43

lecturer: Ruslan Prozorov, office: Zaffarano A119, office phone: 294-9901, prozorov@ameslab.gov

prerequisites: 304 Thermal Physics and 322 Introduction to Modern Physics II

office hours: After lectures, 11AM-12PM

Texts:
Base text:
N. W. Ashcroft and N. D. Mermin, "Solid State Physics", (Holt, Rinehart and Winston, New York, 1976), ISBN: 0-030-83993-9.
Additional:
Ch. Kittel, "Introduction to Solid State Physics", 8th Edition, (John Wiley and Sons, New York, 2004), ISBN 0-471-41526-X
A. A. Abrikosov, "Fundamentals of the Theory of Metals", (Elsevier Science Pub Co., 1988), ISBN: 0-444-87095-4.
L. -P. Levy, "Magnetism and Superconductivity", (Springer, 2000), ISBN: 3-540-66688-5
M. Tinkham, "Introduction to Superconductivity", 2nd edition, (Dover Publications, Inc., New York, 1996), ISBN: 0-486-43503-2.

NOTE: some material will only be available during the lecture and will not appear in the books. All homeworks, tests and exams will be based on the lectures. Therefore, attendance is very important.

Homework: distributed each Tuesday, due on Tuesday a week after.
Paper copy of the solved homework must be placed into the grader's mailbox. Remember indicate your name.
No late submissions will be accepted. Grader:  Matt Vannette (vannette@iastate.edu)

Grading: Based on homework (40%), midterm exam (20%), and final exam (40%).

 Syllabus

Week
Date
Lectures/Exams
Homework
Solutions
1
 8/21/07 Lecture 1: MAGNETISM:Introduction: magnetic response of substanses. Units, conventions, terminology and definitions. Effects of the shape (demagnetisation factors).    
8/23/07 Lecture 2: Para- and Dia- magnetism: Landau and Larmor diamagnetism. Pauli, Van Vleck and free-moment (Langevin) paramagnetism. Brillouin and Langevin functions.
2
 8/28/07 Lecture 3: Mean Field Theory: ferromagnetic transition, Curie-Weiss law. Ferro-, ferri- and antiferro- magnetic materials.
HW1
due 9/4/07
HW1
8/30/07 Lecture 4: Magnetic order: Origin of the exchange interaction. Types of exchange.
3
 9/4/07 Lecture 5: Spin Waves: ferromagnetic and antiferromagnetic spin waves
HW2
due 9/11/07
HW2
9/6/07 Lecture 6: Anisotropy: origin of magnetocrystalline anisotropy, uniaxial and cubic cases, magnetostriction, surface versus bulk magnetism. Kramers theorem and Jahn-Teller distortion.
4
 9/11/07 Lecture 7: Itinerant Magnetism: basic principles of band magnetism. Stoner instability and candidate materials (Fe, Co, Ni, Pd)
HW3
due 9/18/07
HW3
9/13/07 Lecture 8: Experimental methods: Imaging of magnetic domains. DC and AC Magnetometry, neutron scattering, x-ray diffraction, calorimetry, magnetic resonances.
5
 9/18/07 Lecture 9: Thermodynamics: magnetic energy and work, thermodynamic potentials. Phase transitions: Ehrenfest classification: entropy behavior at the transition
HW4
due 9/25/07

HW4
9/20/07 Lecture 10: Landau theory of phase transitions: order parameter and  correlation length. Second-order transitions.
6
9/25/07 Lecture 11: Fluctuations: Ornstein-Zernike theory; renormalization and scaling laws.
HW5
due 10/2/07
HW5
9/27/07 Lecture 12:  First Order Transitions:  metastability, decomposition and nucleation
7
 10/2/07 Lecture 13: Quantum criticality: phase transitions at T=0
HW6
due 10/9/07
HW6
10/4/07 Lecture 14: Size effects: ferromagnetic materials at the nanoscale. Superparamagnetism. Irreversibility under superparamagnetic blocking. Magnetic relaxation.
8
 10/9/07 Lecture 15: SUPERCONDUCTIVITY: Experimental Facts: Meissner effect, persistent currents, isotope effect. Characteristic lengths and critical parameters.

HW7
due 10/23/07
HW7
10/11/07 Lecture 16:  London theory: explanation of the Meissner effect. Magnetization. Current and field distributions. Demagnetization factors
9
10/16/07 Lecture 17: .Overview of magnetism - preparation for the Midterm Exam
no HW - prep for exam
mideterm
solutions
10/18/07
MIDTERM EXAM (Magnetism Only)
10
 10/23/07 Lecture 18: Ginzburg-Landau Theory - I: Complex order parameter. Characteristic lengths. Correspondence between BCS and GL theories.
HW8
due 10/30/07
HW8
10/25/07 Lecture 19: Ginzburg-Landau Theory - II: Energy of S/N boundary, proximity effect. Type I and type II superconductors. The Abrikosov Vortex.
11
10/30/07 Lecture 20: Bardeen-Cooper-Schrieffer (BCS) Theory: Cooper pairs, pair occupancy, energy gap, transition temperature, thermodynamic quantities
HW9
due 11/6/07
HW9
11/1/07 Lecture 21: BSC II : Temperature-dependent gap, excitation spectrum, density of states, coherence length, unconventional superconductors (non s-wave  pairing)
12
11/6/07 Lecture 22: Type I and type II superconductors: Intermediate and mixed states. Reversible magnetization. Flux flow.
HW10
due 11/13/07
HW10
11/8/07 Lecture 23: Irreversible properties I: microscopic origins of flux pinning, critical current, single-vortex pinning, collective pinning.
13
11/13/07 Lecture 24: Irreversible properties II: Bean model, irreversible magnetization, critical current, flux creep. Electric field in superconductors
HW11
due 11/27/07
HW11
11/15/07 Lecture 25: Experimental methods: Electromagnetic and thermal measurements at low temperatures. Spectroscopy. Angle-resolved photoemission. Neutron scattering. NMR.
  11/19-23
THANKSGIVING BREAK - NO CLASSES
   
14
11/27/07 Lecture 26: Josephson Effect: tunneling of single electrons and Cooper pairs. Various types of junctions.
HW12
due 12/4/07
HW12
11/29/07 Lecture 27: DC and AC Superconducting Quantum Interference Device (SQUID)
15
12/4/07 Lecture 28: Unconventional superconductors: (anti) ferromagnetic superconductors, gapless superconductivity, high-Tc cuprates etc    
12/6/07 Lecture 29: Review of superconductivity before the final exam.
16
12/12/07 FINAL EXAM: Wednesday, December 12 at 9:45 AM - 11:45 AM (see http://www.iastate.edu/~registrar/exams/)

THE CLASS IS OVER.

CALENDAR:

Details for Fall Semester 2007