# Solid State Theory
winter 2022/23

Thu, 8.**20**- 9.

**50**| SR E0.03 THP

Fri, 12.00 - 13.30 | SR E0.03 THP

## Overview

The lecture will introduce elementary concepts of solid state theory, including- introduction to lattice structures
- lattice and electron dynamics
- phonons
- electrons on a lattice (non-interacting)
- electron-electron interaction

## Tutorials

Tutorials and homework assignments will start in the**second week**of the winter term and will be held every other Friday morning (in lieu of the lecture).

**Assignments**

- sheet 0: crystal structures with VESTA, reciprocal lattices and Brillouin zones, Wigner-Seitz cells
- sheet 1: Fourier transformation, δ-function, covalent bonds
- sheet 2: diatomic chain, phonons in python
- sheet 3: specific heat of phonons, Debye model
- sheet 4: Kronig-Penney model, perturbation theory
- sheet 5: tight binding chain, diatomic tight binding chain, tight binding in second quantisation
- sheet 6: Haldane model

## Syllabus / Lectures

- part 0/1: Motivation, Solids: Crystaline solids, crystal structures and classification, reciprocal lattice, scattering
- part 2: Born-Oppenheimer / adiabatic approximation: decoupling of electron and ion dynamics
- part 3: phonons
- part 4: non-interacting electrons

## Literature

- Steven H. Simon, The Oxford Solid State Basics (Oxford University Press)

Uni-Bibliothek, Studierendenbibliothek Physik - Gerd Czycholl, Theoretische Festkörperphysik (Springer)

Uni-Bibliothek, Studierendenbibliothek Physik

Unfortunately this book is available only in German.

**Classic textbooks**

- Neil W. Ashcroft and David N. Mermin, Solid state physics (Holt, Rinehart and Winston)

Uni-Bibliothek, Studierendenbibliothek Physik - Charles Kittel, Quantum Theory of Solids (John Wiley)

Uni-Bibliothek, Studierendenbibliothek Physik