TITLE

Enhancement of synchronized vortex lattice motion in hybrid magnetic/amorphous superconducting nanostructures

AUTHOR(S)
Perez de Lara, D.; Alija, A.; Gonzalez, E. M.; Martin, J. I.; Velez, M.; Colino, J. M.; Anguita, J. V.; Vicent, J. L.
PUB. DATE
March 2009
SOURCE
Applied Physics Letters;3/23/2009, Vol. 94 Issue 12, p122506
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Superconducting a-Mo3Si and Nb films have been grown on arrays of Ni nanodots. We have studied the vortex lattice dynamics close to critical temperatures. Different vortex lattice configurations are obtained with the same array unit cell. These different vortex lattices occur at matching conditions between the vortex lattice and the array unit cell. The interplay between the random intrinsic pinning of the superconducting films and the periodic pinning of the array govern the vortex lattice configurations. Different vortex lattice configurations and enhancement of synchronized vortex lattice motion are obtained by increasing the periodic pinning strength and decreasing the random pinning strength.
ACCESSION #
37259572

 

Related Articles

  • Controlling flux flow dissipation by changing flux pinning in superconducting films. Grimaldi, G.; Leo, A.; Nigro, A.; Silhanek, A. V.; Verellen, N.; Moshchalkov, V. V.; Milosˇevic, M. V.; Casaburi, A.; Cristiano, R.; Pace, S. // Applied Physics Letters;5/14/2012, Vol. 100 Issue 20, p202601 

    We study the flux flow state in superconducting materials characterized by rather strong intrinsic pinning, such as Nb, NbN, and nanostructured Al thin films, in which we drag the superconducting dissipative state into the normal state by current biasing. We modify the vortex pinning strength...

  • Strong reduction of thermally activated flux jump rate in superconducting thin films by nanodot-induced pinning centers. Crisan, A.; Badica, P.; Fujiwara, S.; Nie, J. C.; Sundaresan, A.; Tanaka, Y.; Ihara, H. // Applied Physics Letters;5/13/2002, Vol. 80 Issue 19, p3566 

    From frequency-dependent ac susceptibility studies of (Cu,T1)BaSrCa[sub 2]Cu[sub 3]O[sub y] superconducting thin films, with and without nanodot-induced artificial pinning centers, we estimated the activation energy of flux jumps. The result was that, in the film with nanodots, the pinning...

  • Flux pinning force in Nb thin films with periodic vortex pinning arrays. Horng, Lance; Wu, J. C.; Wu, T. C.; Lee, S. F. // Journal of Applied Physics;5/15/2002 Part 1, 2 & 3, Vol. 91 Issue 10, p8510 

    Flux pinning force has been investigated in superconducting Nb thin films with square arrays of artificial flux pinning centers. These pinning centers due to the structural corrugation in the Nb thin film were created. In the mixed state, the magnetoresistance minima and critical current density...

  • The role of the voltage criterion in the interpretation of flux pinning in epitaxial films of YBa2Cu3O7. Wördenweber, R.; Abd-El-Hamed, M. O. // Journal of Applied Physics;1/15/1992, Vol. 71 Issue 2, p808 

    Examines the role of the voltage criterion in the interpretation of flux pinning in epitaxial films of yttrium compound. Factors influence the future application of high-temperature superconductors; Preparation of the thin film sample; Experimental results and discussion.

  • Controlled introduction of flux pinning centers in YBa2Cu3O7-x films during pulsed-laser deposition. Varanasi, C.; Barnes, P. N.; Burke, J.; Carpenter, J.; Haugan, T. J. // Applied Physics Letters;12/26/2005, Vol. 87 Issue 26, p262510 

    To introduce controlled random inclusion of nanometer-sized nonsuperconducting particulates in YBa2Cu3O7-x films for flux pinning enhancement, a special pulsed-laser-ablation YBa2Cu3O7-x target with a Y2BaCuO5 sector was made and the films were deposited on LaAlO3 substrates. Initial results...

  • Enhanced flux pinning in YBa2Cu3O7-δ films by nanoscaled substrate surface roughness. Zu-Xin Ye; Qiang Li; Hu, Y.; Si, W. D.; Johnson, P. D.; Zhu, Y. // Applied Physics Letters;9/19/2005, Vol. 87 Issue 12, p122502 

    Nanoscaled substrate surface roughness is shown to strongly influence the critical current density (Jc) in YBa2Cu3O7-δ (YBCO) films made by pulsed-laser deposition on the crystalline LaAlO3 substrates consisting of two separate twin-free and twin-rich regions. The nanoscaled corrugated...

  • Observation of smectic and moving-Bragg-glass phases in flowing vortex lattices. Pardo, F.; De la Cruz, F.; Gammel, P. L.; Bucher, E.; Bishop, D. J. // Nature;11/26/1998, Vol. 396 Issue 6709, p348 

    Presents research which reported magnetic decoration studies of flowing vortex lattices in superconductors. Defining the superconducting state; Formation of a flux-line lattice (FLL) in a type II superconductor; Effects if the FLL remains pinned, or if the lattice moves; Types of structures...

  • About magnetic relaxation of partially penetrated screening current in superconductors with various models of flux creep. Romanovskii, V. R. // European Physical Journal B -- Condensed Matter;Jun2003, Vol. 33 Issue 3, p255 

    : Magnetic relaxation of the partially penetrated screening current during flux creep has been studied. A theoretical analysis was based on the macroscopic description of the flux creep using the power and exponential equations for current-voltage characteristics of superconductors. The...

  • Interface creation and stress dynamics in plasma-deposited silicon dioxide films. Au, V.; Charles, C.; Boswell, R. W. // Applied Physics Letters;6/5/2006, Vol. 88 Issue 23, p234103 

    The stress in amorphous silicon dioxide film grown by plasma-assisted deposition was investigated both during and after film growth for continuously and intermittently deposited films. It is shown that an intermittent deposition leads to the creation of interfacial regions during film growth,...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics