TITLE

Superconducting properties of polycrystalline Nb nanowires templated by carbon nanotubes

AUTHOR(S)
Rogachev, A.; Bezryadin, A.
PUB. DATE
July 2003
SOURCE
Applied Physics Letters;7/21/2003, Vol. 83 Issue 3, p512
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Continuous Nb wires, 7-15 nm in diameter, have been fabricated by sputter-coating single fluorinated carbon nanotubes. Transmission electron microscopy revealed that the wires are polycrystalline, having grain sizes of about 5 nm. The critical current of wires thicker than ∼12 nm is very high (10[SUP7]A/cm[SUP2]) and comparable to the expected depairing current. The resistance versus temperature curves measured down to 0.3 K are well described by the Langer-Ambegaokar-McCumber-Halperin theory of thermally activated phase slips. Quantum phase slips are suppressed.
ACCESSION #
10281594

 

Related Articles

  • Analysis of Nb layers for superconducting radio frequency cavity applications. Becker, Chaoyue; Posen, Sam; Groll, Nickolas; Cook, Russell; Schlepüutz, Christian M.; Hall, Daniel Leslie; Liepe, Matthias; Pellin, Michael; Zasadzinski, John; Proslier, Thomas // Applied Physics Letters;2/23/2015, Vol. 106 Issue 9, p1 

    We present an analysis of Nb3Sn surface layers grown on a bulk Niobium (Nb) coupon prepared at the same time and by the same vapor diffusion process used to make Nb3Sn coatings on 1.3 GHz Nb cavities. Tunneling spectroscopy revealsa well-developed, homogeneous superconducting density of states...

  • Nb Substitution Effects on Superconducting Properties of Ru1-xNbxSr2Eu1.4Ce0.6Cu2O10-δ. Maldonado-Mejía, J. L.; Quiz-Celestino, J. D.; Botello-Zubiate, M. E.; Palomares-Sánchez, S. A.; Matutes-Aquino, J. A. // Advances in Condensed Matter Physics;2013, p1 

    In order to gain further insight into the role of substitution of Ru by Nb on superconductivity, polycrystalline samples of Ru1-xNbxSr2Eu1.4Ce0.6Cu2O10-δ5 (0.0 ⩽x ⩽ 1.0) have been synthesized by solid-state reaction method. Substitution of Nb at the Ru site in the system takes place...

  • Synthesis and superconducting properties of niobium nitride nanowires and nanoribbons. Patel, U.; Avci, S.; Xiao, Z. L.; Hua, J.; Yu, S. H.; Ito, Y.; Divan, R.; Ocola, L. E.; Zheng, C.; Claus, H.; Hiller, J.; Welp, U.; Miller, D. J.; Kwok, W. K. // Applied Physics Letters;10/15/2007, Vol. 91 Issue 16, p162508 

    Superconducting niobium nitride wires and ribbons with transverse dimensions down to tens of nanometers were synthesized by annealing NbSe3 nanostructure precursors in flowing ammonia gas at temperatures up to 1000 °C. Their critical temperatures increase with increasing annealing...

  • Single-electron effects in heavily doped polycrystalline silicon nanowires. Irvine, Andrew C.; Durrani, Zahid A. K.; Ahmed, Haroon; Biesemans, Serge // Applied Physics Letters;8/24/1998, Vol. 73 Issue 8 

    We have observed single-electron charging effects in heavily doped polycrystalline silicon nanowires at 4.2 K. Wires of approximately 20 nm by 30 nm active cross section were defined by electron-beam lithography and thermal oxidation in standard polycrystalline silicon material. We have measured...

  • Observation of a Second Energy Gap in Nb3Sn -. Goll, G.; Marz, M.; Lortz, R.; Junod, A.; Goldacker, W. // AIP Conference Proceedings;2006, Vol. 850 Issue 1, p987 

    The A15 compound Nb3Sn is a well-known technically relevant superconductor with critical temperature Tc ≈ 18 K. Recently, a low-temperature anomaly in the specific-heat data on a particularly dense and homogeneous polycrystalline sample has been interpreted in terms of the presence of a...

  • High efficiency and rapid response superconducting NbN nanowire single photon detector based on asymmetric split ring metamaterial. Guanhai Li; Shao-Wei Wang; Xiaoshuang Chen; Wei Lu // Applied Physics Letters;6/9/2014, Vol. 104 Issue 23, p1 

    With asymmetric split ring metamaterial periodically placed on top of the niobium nitride (NbN) nanowire meander, we theoretically propose a kind of metal-insulator-metallic metamaterial nanocavity to enhance absorbing efficiency and shorten response time of the superconducting NbN nanowire...

  • Doped niobium superconducting nanowire single-photon detectors. Jia, Tao; Kang, Lin; Zhang, Labao; Zhao, Qingyuan; Gu, Min; Qiu, Jian; Chen, Jian; Jin, Biaobing // Applied Physics B: Lasers & Optics;Sep2014, Vol. 116 Issue 4, p991 

    We designed and fabricated a special doped niobium (Nb*) superconducting nanowire single-photon detector (SNSPD) on MgO substrate. The superconductivity of this ultra-thin Nb* film was further improved by depositing an ultra-thin aluminum nitride protective layer on top. Compared with...

  • Testing of a niobium-oxygen single crystal collector. Desplat, Jean-Louis // AIP Conference Proceedings;2002, Vol. 608 Issue 1, p1022 

    A Nb-O single crystal alloy collector, L2, made by Lutch, with an oxygen content of 2.9 atom % was tested opposite a polycrystaltine tungsten emitter. The emitter bare work function was raised to 5.40 eV, following oxygen evaporation from the collector and adsorption onto the emitter. This...

  • Hydrogen Absorption in Electropolishing of Niobium. Higuchi, T.; Saito, K. // AIP Conference Proceedings;2003, Vol. 671 Issue 1, p203 

    Electropolishing process had been considered to cause hydrogen absorption that could result in hydrogen Q-disease in niobium superconducting RF cavities. Recently, however, we found that hydrogen Q-disease did not always occur in a L-band niobium RF cavity treated by continuous electropolishing...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics