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- Title
Quantum fluctuations and density of states in low-dimensional superconductors.
- Authors
Radkevich, Alexey A.; Semenov, Andrew G.; Zaikin, Andrei D.
- Abstract
We investigate the influence of quantum phase fluctuations on electron density of states (DOS) in ultrathin superconducting films and nanowires. Using an effective action approach we derive a non-perturbative correction to DOS in such systems. The main effect of phase fluctuations in quasi-two-dimensional films is the appearance of electron states at subgap energies while in quasi-one-dimensional nanowires fluctuations also lead to smearing of the gap edge singularity in DOS.
- Subjects
QUANTUM fluctuations; DENSITY of states; QUANTUM phase transitions; SUPERCONDUCTING films; NANOWIRES
- Publication
European Physical Journal: Special Topics, 2019, Vol 227, Issue 15/16, p2289
- ISSN
1951-6355
- Publication type
Article
- DOI
10.1140/epjst/e2018-800046-x