Superfluidity

Erkki Thuneberg

doi:10.1016/B978-0-323-90800-9.00045-7

Superfluidity

Research output: Chapter in Book/Report/Conference proceeding › Entry for encyclopedia / dictionary › Scientific › peer-review

Abstract

This chapter gives an introduction to basic properties of superfluids. After defining the subject, we list systems where it occurs: liquid 4He, liquid 3He, dilute atomic gases, neutron stars and superconducting metals. The microscopic basis for the formation of the superfluid phase is considered in boson and fermion systems. The two-fluid model is introduced and some consequences are discussed. The quantization of circulation is presented. Quantized vortex lines are introduced and they are used to explain the structure of a rotating superfluid. Phase slip, Josephson effect and critical velocity are discussed.

Original language	English
Title of host publication	Encyclopedia of Condensed Matter Physics
Editors	Tapash Chakraborty
Publisher	Academic Press
Pages	1-9
ISBN (Print)	978-0-323-91408-6
DOIs	https://doi.org/10.1016/B978-0-323-90800-9.00045-7
Publication status	Published - 2023
MoE publication type	A3 Book section, Chapters in research books

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10.1016/B978-0-323-90800-9.00045-7

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title = "Superfluidity",

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AB - This chapter gives an introduction to basic properties of superfluids. After defining the subject, we list systems where it occurs: liquid 4He, liquid 3He, dilute atomic gases, neutron stars and superconducting metals. The microscopic basis for the formation of the superfluid phase is considered in boson and fermion systems. The two-fluid model is introduced and some consequences are discussed. The quantization of circulation is presented. Quantized vortex lines are introduced and they are used to explain the structure of a rotating superfluid. Phase slip, Josephson effect and critical velocity are discussed.

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BT - Encyclopedia of Condensed Matter Physics

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ER -

Superfluidity

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