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Comment on "Quantum Phase Slips and Transport in Ultrathin Superconducting Wires"

Ji-Min Duan
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Abstract

In a recent Letter (Phys. Rev. Lett.78, 1552 (1997) ), Zaikin, Golubev, van Otterlo, and Zimanyi criticized the phenomenological time-dependent Ginzburg-Laudau model which I used to study the quantum phase-slippage rate for superconducting wires. They claimed that they developed a "microscopic" model, made qualitative improvement on my overestimate of the tunnelling barrier due to electromagnetic field. In this comment, I want to point out that, i), ZGVZ's result on EM barrier is expected in my paper; ii), their work is also phenomenological; iii), their renormalization scheme is fundamentally flawed; iv), they underestimated the barrier for ultrathin wires; v), their comparison with experiments is incorrect.

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Ji-Min Duan. 1997-04-02. Comment on "Quantum Phase Slips and Transport in Ultrathin Superconducting Wires". https://doi.org/10.1103/physrevlett.79.3316

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