General data

Course name: Applied Solid State Physics

Course code: BMETE11AF11;

Requirements: 2/0/0/V/2;

Semester: Spring;

Language: English;

Responsible teacher: Szabolcs Csonka, associate professor

Lecturer: Máté Vigh, assistant professor

Department: Department of Physics

Programme: BSc Physics (mandatory) and MSc Physics (recommended for students without preliminary studies in solid state physics)

Exam: Written/Oral exam at the end of semester
Topics of the exam
Detailed list of topics
Topics
Semiconductor physics: band structure, electrons and holes, impurity doping, statistical mechanics of semiconductors.

Steven H. Simon  The Oxford Solid State Basics, Chapter 17
Semiconductor devices: band structure engineering, pn junction and the transistor.

Steven H. Simon  The Oxford Solid State Basics, Chapter 18
Electron transport in nanowires: Characteristic lengthscales, conductance of a quantum wire, Landauer formula, conductance quantization
Thermoelectric phenomena in nanowires: Seebeck and Peltier effect, heat conduction and WiedemannFranz law
Coherent and incoherent transport: four probe resistance, coherent and incoherent serial connection of scattering centers, demonstration of Ohm's law.
The Boltzmann equation: nonequilibrium distribution function, the Boltzmann equation in the relaxation time approximation, solution of the Boltzmann equation in finite tamparature gradient or in finite electric field. Calculation of the conductance in an isotropic system. Thermoelectric phenomena. Temperature dependence of the resistance in metals.
Magnetism: origin of atomic magnetic moments: Hund's rules, why do magnetic moments align? Investigation of a toy model (2 electrons in an atom), symmetry of the wavefunction, exchange energy; simple models of magnetism: effective model of interacting spins (by Dirac), Heisenberg model, Ising model. Types of spontaneous magnetic order; ferromagnets, antiferromagnets, ferrimagnets; spontaneous symmetry breaking, frustration. The mean field theory of ferromagnets, effective (Weiss)field, self consistency equation, paramagnetic and ferromagnetic phase, critical temperature (Curiepoint); spontaneous magnetization as a function of temperature.

Steven H. Simon  The Oxford Solid State Basics, Sections 19.119.2, chapters 20 and 22
Superconductivity: Phenomenology of superconductors. Macroscopic wave function and the Meissner effect.
Literature
Steven H. Simon: The Oxford Solid State Basics
N. W. Ashcroft and N. D. Mermin: Solid State Physics
C. Kittel: Introduction to Solid State Physics