Quantum phase slips in superconducting nanowires

C. N. Lau; N. Markovic; M. Bockrath; A. Bezryadin; M. Tinkham

doi:10.1103/PhysRevLett.87.217003

Quantum phase slips in superconducting nanowires

C. N. Lau, N. Markovic, M. Bockrath, A. Bezryadin, M. Tinkham

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Abstract

We have measured the resistance vs temperature of more than 20 superconducting nanowires with nominal widths ranging from 10 to 22 nm and lengths from 100 nm to 1µm. With decreasing cross-sectional areas, the wires display increasingly broad resistive transitions. The data are in very good agreement with a model that includes both thermally activated phase slips close to T_c and quantum phase slips (QPS) at low temperatures, but disagree with an earlier model based on a critical value of R_N/R_q. Our measurements provide strong evidence for QPS in thin superconducting wires.

Original language	English (US)
Pages (from-to)	217003-1-217003-4
Journal	Physical review letters
Volume	87
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.87.217003
State	Published - Nov 19 2001

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Physics and Astronomy(all)

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10.1103/PhysRevLett.87.217003

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AU - Bezryadin, A.

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AB - We have measured the resistance vs temperature of more than 20 superconducting nanowires with nominal widths ranging from 10 to 22 nm and lengths from 100 nm to 1µm. With decreasing cross-sectional areas, the wires display increasingly broad resistive transitions. The data are in very good agreement with a model that includes both thermally activated phase slips close to Tc and quantum phase slips (QPS) at low temperatures, but disagree with an earlier model based on a critical value of RN/Rq. Our measurements provide strong evidence for QPS in thin superconducting wires.

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Quantum phase slips in superconducting nanowires

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