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

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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 · Physical Review B

T1

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Abstract

We report on magnetoresistance oscillations in superconducting NbNx nanowires synthesized through ammonia gas annealing of NbSe3 precursor 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 voltage-current characteristics observed in this work result from the granular structure of our nanowires.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
NbNx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	9.94	Pressure not reported	midpoint
NbNx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	7.25	Pressure not reported	midpoint