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Course, academic year 2018/2019
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Contemporary Problems of Low Temperature Physics - NFPL180
Title in English: Aktuální problémy fyziky nízkých teplot
Guaranteed by: Department of Low Temperature Physics (32-KFNT)
Faculty: Faculty of Mathematics and Physics
Actual: from 2003
Semester: summer
E-Credits: 3
Hours per week, examination: summer s.:0/2 C [hours/week]
Capacity: unlimited
Min. number of students: unlimited
State of the course: taught
Language: Czech
Teaching methods: full-time
Guarantor: doc. Mgr. Jaroslav Kohout, Dr.
prof. RNDr. Ladislav Skrbek, DrSc.
Annotation -
Last update: T_KFNT (23.05.2003)
One week off site seminar. The program is organized as an introduction to various aspects of low temperature physics, hyperfine interactions and nuclear methods in solid state physics for beginners and involves description of contemporary problems that are currently under investigation.
Course completion requirements - Czech
Last update: doc. Mgr. Jaroslav Kohout, Dr. (09.10.2017)

Zápočet se uděluje za aktivní účast na semináři, který probíhá v týdenním soustředění. Zápočet nelze opakovat.

Syllabus -
Last update: T_KFNT (23.05.2003)

Temperature scale and the role of temperature in physics. Low temperature physics and topics of investigation.

Basic properties of 4He and 3He, liquifaction, thermal insulation, Dewar vessels, cryostats. Fermi-Dirac and Bose - Einstein quantum statistics. Ideal Bose gas, Bose - Einstein condensation (BEC). Ideal Fermi gas, Fermi liquid. Phase diagrams of 4He and 3He, superfluidity, hydrodynamics and quantized vortices. 3He-4He mixtures, dilution refrigerator. Adiabatic demagnetization, nuclear demagnetization. Thermometry.

Supeconductivity - basic properties, ideas and application. Josephson phenomena. High temperature superconductivity.

Physical properties of solids at low temperature. Metals, insulators, semiconductors - phonons, electrons, holes. Introduction into energy spectrum, valence and conduction band. Debay temperature. Quantum Hall effect. Magnetism at low temperatures. Nuclear magnetism, Van Vleck paramagnets.

Nuclear methods in condensed matter physics. Principles of nuclear magnetic resonance- Larmor precession, Bloch equations, spin echo. NMR in magnetics, hyperfine interactions. Nuclear magnetic imaging. High resolution NMR. Nuclear orientation. Mössbauer spectroscopy. Positron annihilation.

 
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