SubjectsSubjects(version: 845)
Course, academic year 2018/2019
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Solid State Theory - NFPL001
Title in English: Teorie pevných látek
Guaranteed by: Institute of Physics of Charles University (32-FUUK)
Faculty: Faculty of Mathematics and Physics
Actual: from 2011
Semester: summer
E-Credits: 7
Hours per week, examination: summer s.:3/2 C+Ex [hours/week]
Capacity: unlimited
Min. number of students: unlimited
State of the course: taught
Language: Czech
Teaching methods: full-time
Guarantor: prof. RNDr. Roman Grill, CSc.
prof. Pavel Lipavský, CSc.
Classification: Physics > Solid State Physics
Interchangeability : NFPL182
Is pre-requisite for: NOOE006
Is interchangeable with: NFPL182
Annotation -
Last update: T_FUUK (22.05.2004)
Physical properties of solids. Influence of translation symmetry and its distorsion by external fields and internal perturbations. Lattics vibrations are used to show a quantization of physical fields. Quasiparticles (excitons, magnons, plasmons, polarons) are introduced. Application of the perturbation theory methods, canonical transformations, and Green functions to the electron-phonon interaction is used for investigation of their mutual interaction.
Aim of the course -
Last update: GRILL/MFF.CUNI.CZ (10.05.2008)

Review on basic theory of bulk solids - band structure, lattice vibrations, quasiparticles. An effect of translational symmetry and its distorsion by external fields and internal perturbations.

Course completion requirements -
Last update: prof. RNDr. Roman Grill, CSc. (13.06.2019)

Presentation of a given example at the exercise

Oral examination

Literature -
Last update: GRILL/MFF.CUNI.CZ (10.05.2008)

A.I.Anselm: Úvod do teorie polovodičů (Praha, Academia, 1967)

Teaching methods -
Last update: GRILL/MFF.CUNI.CZ (10.05.2008)

lecture + exercise

Requirements to the exam -
Last update: prof. RNDr. Roman Grill, CSc. (13.06.2019)

Mastering the lecture and practicing the exercise.

Syllabus -
Last update: T_FUUK (22.05.2004)
One electron approximation
Adiabatic approximation, one electron crystal potential, direct and reciprocal lattice, Bloch theorem, consequences. Brillouin zones. NFE and TB methods. Born-Karman conditions, efective mass, electron-hole symmetry, metal-semiconductor-isolator, Fermi surface, real electron structure in 3, 2 and 1 dimensions.

Consequences of translational symmetry breaking
Wannier theorem, impurity and surface states, superlattices and quantum structures.

Quantization of physical fields
Lattice vibrations, harmonic approximation, normal coordinates, acustic and optical phonons, representation of occupation numbers.

Thermodynamics and statistical physics of elementary excitations
Specific heat of electron gas and phonons, statistic of semiconductors with impurity states (Einstein and Debye models), anharmonicity, thermal expansion.

Electron in electric and magnetic fields
Classical and quantum motion. Landau levels, cyclotron frequency, orbit topology,

de Hass-van Alphen effect.

Dialecrtric properties of solids
General dialectric constant, dispersion, local and macroscopic fields, jellium, screening, Thomas-Fermi model, screening of the impurity, Friedel oscillations,

Lyddane-Sachs-Teller expression.

Quasiparticles in solids
Perturbation theory, canonical transformation, Green functions.

Excitons, magnons, plasmons, polarons, BCS theory of superconductivity.

 
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