Quantum tunneling of the order parameter in superconducting nanowires
Dmitri S. Golubev, Andrei D. Zaikin
DOI 10.1103/PhysRevB.64.014504 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Quantum tunneling of the superconducting order parameter gives rise to the phase slippage process which controls the resistance of ultrathin superconducting wires at sufficiently low temperatures. If the quantum phase slip rate is high, superconductivity is completely destroyed by quantum fluctuations and the wire resistance never decreases below its normal state value. We present a detailed microscopic theory of quantum phase slips in homogeneous superconducting nanowires. Focusing our attention on relatively short wires we evaluate the quantum tunneling rate for phase slips, both the quasiclassical exponent and the pre-exponential factor. In very thin and dirty metallic wires the effect is shown to be clearly observable even at T→0. Our results are fully consistent with recent experimental findings [A. Bezryadin, C.N. Lau, and M. Tinkham, Nature (London) 404, 971 (2000)] which provide direct evidence for the effect of quantum phase slips.
Similar papers
Quantum Phase Slips and Transport in Ultrathin Superconducting Wires
similarity 0.93Andrei D. Zaikin et al.
Source status unknown — claims are unverified
Quantum Fluctuations in Thin Superconducting Wires of Finite Length
similarity 0.90H. P. Büchler et al.
Source status unknown — claims are unverified
Modeling and simulations of quantum phase slips in ultrathin superconducting wires
similarity 0.90Andreas Andersson & Jack Lidmar
Source status unknown — claims are unverified
Evidence for Macroscopic Quantum Tunneling of Phase Slips in Long One-Dimensional Superconducting Al Wires
similarity 0.89Fabio Altomare et al.
Source status unknown — claims are unverified
Quantitative test of a quantum theory for the resistive transition in a superconducting single-walled carbon nanotube bundle
similarity 0.88Guo-meng Zhao
Source status unknown — claims are unverified
Quantum fluctuations and phase coherence in superconducting nanowires
similarity 0.88Alexey Radkevich et al. · 2019 · arXiv:1905.08544
Source status unknown — claims are unverified