Fabrication of nanometer-spaced superconducting Pb electrodes

Kang Luo; Zhen Yao
September 2009
Applied Physics Letters;9/14/2009, Vol. 95 Issue 11, p113115
Academic Journal
We report the fabrication of superconducting Pb electrodes with nanometer-sized separation by using the electromigration technique. Below the superconducting transition temperature, the electrodes show current-voltage characteristics consistent with the tunneling between two superconducting electrodes, which can be well understood within conventional theory of superconductivity. The electrodes can be reversibly switched between the normal and superconducting states by the application of an external magnetic field. These electrodes are suited for electron-transport studies of chemically synthesized nanostructures and the utility is demonstrated by making single-molecule transistors incorporating individual Co-porphyrin molecules.


Related Articles

  • Localized phase-slip centers in proximity-induced long superconducting nanowires. Liu, Haidong; Ye, Zuxin; Wu, Wenhao; Rathnayaka, K. D. D. // Journal of Applied Physics;Apr2009, Vol. 105 Issue 7, p07E305 

    Current-voltage (I-V) curves have been measured on 60-μm-long Zn nanowires in contact with bulk film electrodes of Sn or Pb. The Zn nanowires become superconducting at the transition temperatures of the respectively electrodes, which are well above the transition temperature of bulk Zn. At...

  • Influence of magnetic field on the superconducting transition in a Nd1.82Ce0.18CuO4-d film. Harus, G. I.; Ignatenkov, A. N.; Lerinman, N. K.; Ponomarev, A. I.; Sabirzyanova, L. D.; Shelushinina, N. G.; Babushkina, N. A.; Belova, L. M. // JETP Letters;9/25/96, Vol. 64 Issue 6, p444 

    The temperature and magnetic-field dependences of the resistivity ? and Hall effect R(j||ab,B||c)in a Nd1.82Ce0.18CuO4-d single crystal film (Tc=6 K) is investigated at temperatures 1.4= T=20 K and magnetic fields 0= B=5.5 T. At the lowest temperature T=1.4 K the resistive state (exhibiting...

  • The Ginzburg–Landau equations for superconducting films and the Meissner effect. Yang, Yisong // Journal of Mathematical Physics;May90, Vol. 31 Issue 5, p1284 

    The existence of the solutions at the lowest energy level to the Ginzburg–Landau equations describing superconducting films under the influence of an external magnetic field is proved. The condition obtained for maintaining superconducting states does not involve the...

  • Magnetic and superconducting properties of Tm[sub 1-x]Gd[sub x]Ni[sub 2]B[sub 2]C. Mori, K.; Sakai, S.; Cao, S. X.; Nishimura, K. // AIP Conference Proceedings;2002, Vol. 614 Issue 1, p1074 

    The variations of the superconducting transition temperature, T[sub c], and magnetic transition temperature, T[sub N], as a function of Gd concentration, x, were investigated in Tm[sub 1-x]Gd[sub x]Ni[sub 2]B[sub 2]C system. TmNi[sub 2]B[sub 2]C has a superconducting transition at T[sub c] = 11...

  • Upper Critical Field Measurements up to 60 T in Arsenic-Deficient LaO0.9F0.1FeAs1- d: Pauli Limiting Behavior at High Fields vs. Improved Superconductivity at Low Fields. Fuchs, G.; Drechsler, S.-L.; Kozlova, N.; Freudenberger, J.; Bartkowiak, M.; Wosnitza, J.; Nenkov, K.; B�chner, B.; Schultz, L.; Behr, G. // Journal of Low Temperature Physics;Apr2010, Vol. 159 Issue 1/2, p164 

    We report resistivity and upper critical field B c2( T) data for As-deficient LaO0.9F0.1FeAs1- d in a wide temperature and field range up to 60 T. These disordered samples exhibit a slightly enhanced superconducting transition at T c=29 K and a significantly enlarged slope d B c2/d T=-5.4 T/K...

  • Investigation of the Double Superconducting Transition and Low-Temperature Specific Heat of Pr(Os1-xRux)4Sb12. N. Frederick; T. Sayles; M. Maple // Journal of Low Temperature Physics;May2007, Vol. 147 Issue 3/4, p321 

    The double superconducting transition in PrOs4Sb12, first observed in specific heat C(T) measurements on single crystal samples, was studied by means of specific heat measurements on PrOs4Sb12crystals that had been subjected to applied magnetic fields, substitution of up to 4 Ru for Os, and...

  • Calorimetric Studies on the Pairing State of Multiband Superconductivity. Yang, H. D.; Lin, J. Y. // AAPPS Bulletin;Oct2011, Vol. 20/21 Issue 2, p8 

    After applying numerical fitting to the data of the electronic part of specific-heat without and with magnetic fields[S1], one might be able to identify that a certain model, such as simple BCS-like s-wave, anisotropic s-wave, d-wave, two-gap or other combination, is better to describe the order...

  • Iron-Based Superconductors Set New Performance Records.  // Magnetics Business & Technology;Spring2013, Vol. 12 Issue 1, p4 

    The article reports on the creation of a high-performance iron-based superconducting wire that can carry tremendous current under very high magnetic fields in 2013. Results reportedly show a unique structure that outperforms competing low-temperature superconducting wires without the costs of...

  • Variable transformer for controllable flux coupling. Castellano, M. G.; Chiarello, F.; Leoni, R.; Simeone, D.; Torrioli, G.; Cosmelli, C.; Carelli, P. // Applied Physics Letters;4/11/2005, Vol. 86 Issue 15, p152504 

    We discuss and demonstrate a prototype of superconducting transformer with a flux transfer function that can be varied in a wide range, by acting on a control parameter. The device is realized by inserting a small hysteretic superconducting quantum interference device (dc-SQUID) with unshunted...


Read the Article


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

Try another library?
Sign out of this library

Other Topics