Magnetoresistance oscillations in superconducting granular niobium nitride nanowires

U. Patel; Z. L. Xiao; A. Gurevich; S. Avci; J. Hua; R. Divan; U. Welp; W. K. Kwok

doi:10.1103/PhysRevB.80.012504

Magnetoresistance oscillations in superconducting granular niobium nitride nanowires

U. Patel, Z. L. Xiao, A. Gurevich, S. Avci, J. Hua, R. Divan, U. Welp, W. K. Kwok

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

We report on magnetoresistance oscillations in superconducting NbN _x nanowires synthesized through ammonia gas annealing of NbSe ₃ recursor nanostructures. Even though the transverse dimensions of the nanowires are much larger than the superconducting coherence length, the voltage-current characteristics of these nanowires at low temperatures are reminiscent of one-dimensional superconductors where quantum phase slips are associated with the origin of dissipation. We show that both the magnetoresistance oscillations and voltagecurrent characteristics observed in this work result from the granular structure of our nanowires.

Original language	English
Article number	012504
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	80
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevB.80.012504
Publication status	Published - 6 Aug 2009
Externally published	Yes

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10.1103/PhysRevB.80.012504

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AU - Patel, U.

AU - Xiao, Z. L.

AU - Gurevich, A.

AU - Avci, S.

AU - Hua, J.

AU - Divan, R.

AU - Welp, U.

AU - Kwok, W. K.

PY - 2009/8/6

Y1 - 2009/8/6

N2 - We report on magnetoresistance oscillations in superconducting NbN x nanowires synthesized through ammonia gas annealing of NbSe 3 recursor nanostructures. Even though the transverse dimensions of the nanowires are much larger than the superconducting coherence length, the voltage-current characteristics of these nanowires at low temperatures are reminiscent of one-dimensional superconductors where quantum phase slips are associated with the origin of dissipation. We show that both the magnetoresistance oscillations and voltagecurrent characteristics observed in this work result from the granular structure of our nanowires.

AB - We report on magnetoresistance oscillations in superconducting NbN x nanowires synthesized through ammonia gas annealing of NbSe 3 recursor nanostructures. Even though the transverse dimensions of the nanowires are much larger than the superconducting coherence length, the voltage-current characteristics of these nanowires at low temperatures are reminiscent of one-dimensional superconductors where quantum phase slips are associated with the origin of dissipation. We show that both the magnetoresistance oscillations and voltagecurrent characteristics observed in this work result from the granular structure of our nanowires.

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Magnetoresistance oscillations in superconducting granular niobium nitride nanowires

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