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The A-phase at very low temperatures, a one-dimensional excitation gas

Research output: Contribution to journalJournal article

Published

Journal publication date02/1994
JournalPhysica B: Condensed Matter
Journal number1
Volume194-196
Number of pages2
Pages793-794
Original languageEnglish

Conference

Conference20th International Conference on Low Temperature Physics
CityEUGENE
Period4/08/9311/08/93

Abstract

The excitation gas in the A-phase at very low temperatures is concentrated in the region of the Fermi surface around the polar nodes in the gap and is thus almost one-dimensional. These low lying excitations are trapped by Andreev reflection in ''directional'' quantum wells created by the textural configuration. Although the vast bulk of quasiparticles at the lowest temperatures are in such states they have virtually no effect on the transport properties or on the damping of mechanical resonators since they have very little probability of ever reaching a surface.