Pec pod Sněžkou
Contemporary Problems of Low Temperature Physics
is an off-site seminar for Bc. students in the beautiful region of Pec pod Sněžkou with the highest Czech mountain Sněžka (1603 m).
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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 a description of current scientific investigation in the low-temperature physics. The lectures are given in Czech language, however, a minority of them could be given in English by foreign-language specialists.
- Temperature scale and the role of temperature in physics. Low temperature physics and topics of investigation.
- Basic properties of 4He and 3He, liquefaction, 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.
- Superconductivity - 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.
Report on the year 2020
Výukové a školicí středisko UK Praha
Velká pláň 159
542 21 Pec pod Sněžkou
Instructions for participants: