Basic Superfluids  book cover
1st Edition

Basic Superfluids

ISBN 9780748408924
Published November 27, 2002 by CRC Press
176 Pages

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Book Description

Superfluidity is the jewel in the crown of low temperature physics. When temperatures are low enough, every substance in thermal equilibrium must become ordered. Since some materials remain fluid to the lowest temperatures, it is a fascinating question as to how this ordering can take place. One possibility is the formation of a superfluid state, a state in which there is macroscopic quantum order-effectively quantum mechanics in a tea-cup. The author develops and presents these ideas in the beginning of Basic Superfluids. The book assumes some basic knowledge of quantum, statistical and thermal physics, and builds on this background to give a readable introduction to the three superfluids of low temperature physics. A short chapter describing experimental techniques is included. The emphasis throughout is on physical principles rather than technical detail, with the aim of introducing the subject in an accessible yet authoritative way to final-year undergraduates or starting postgraduate students.

Table of Contents

What Happens at Low Temperatures. Entropy, Ordering and the Third Law. The Third Law of Thermodynamics and Ordering. Ordering in Helium. What makes a superfluid? What makes a superfluid superfluid? Liquid ^T4He. Some properties of Liquid ^T4He in the two-fluid region. Elementary excitations and the critical verlocity. Quantum effects, verlocity and rotation. Thermal and mechanical effects revisited. Experimental Techniques. Cooling methods. Thermometry and thermal contact. Superconductivity. The basic properties of superconductors. The wave function and electrodynamics. BCS theory and its consequences. Some other properties of superconductors. Liquid ^T3He. Some theoretical ideas. Experimental properties of superfluid ^T3He. Superconductivity in other ^T3He systems.

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