Second Sound in Systems of One-Dimensional Fermions
Journal Article
·
· Physical Review Letters
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
- Univ. of Washington, Seattle, WA (United States). Dept. of Physics
We study sound in Galilean invariant systems of one-dimensional fermions. At low temperatures, we find a broad range of frequencies in which in addition to the waves of density there is a second sound corresponding to ballistic propagation of heat in the system. The damping of the second sound mode is weak, provided the frequency is large compared to a relaxation rate that is exponentially small at low temperatures. At lower frequencies the second sound mode is damped, and the propagation of heat is diffusive.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-06CH11357; FG02-07ER46452
- OSTI ID:
- 1417020
- Alternate ID(s):
- OSTI ID: 1414988
- Journal Information:
- Physical Review Letters, Vol. 119, Issue 26; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 11 works
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