[en] The vortex dynamics in superconducting films deposited on top of a fivefold Penrose array of magnetic dots is studied by means of transport measurements. The authors show that in the low pinning regime (demagnetized dots) a few periodic and aperiodic matching features coexist. In the strong pinning regime (magnetized dots) a richer structure of unforeseen periodic and aperiodic vortex patterns appear, giving rise to a clear enhancement of the critical current in a broader field range. Possible stable vortex configurations are determined by molecular dynamics simulations. (c) 2006 American Institute of Physics.
V. V. Moshchalkov, V. Bruyndoncx, L. Van Look, M. J. Van Bael, Y. Bruynseraede, and A. Tonomura, in Electrical Properties, Handbook of Nanostructured Materials and Nanotechnology Vol. 3, edited by, H. S. Nalwa, (Academic, San Diego, 2000), Chap., p. 451.
A. A. Zhukov, P. A. J. de Groot, V. V. Metlushko, and B. Ilic, Appl. Phys. Lett. 83, 4217 (2003).
A. V. Silhanek, L. Van Look, S. Raedts, R. Jonckheere, and V. V. Moshchalkov, Phys. Rev. B 68, 214504 (2003).
M. Pannetier, R. J. Wijngaarden, I. Flan, J. Rector, B. Dam, R. Griessen, P. Lahl, and R. Wrdenweber, Phys. Rev. B 67, 212501 (2003).
D. M. Silevitch, D. H. Reich, C. L. Chien, S. B. Field, and H. Shtrikman, J. Appl. Phys. 89, 7478 (2001).
D. Niebieskikwiat, A. Silhanek, L. Civale, G. Nieva, P. Levy, and L. Krusin-Elbaum, Phys. Rev. B 63, 144504 (2001).
V. Misko, S. Savel'ev, and F. Nori, Phys. Rev. Lett. 95, 177007 (2005).
D. R. Nelson and B. I. Halperin, Phys. Rev. B 19, 2457 (1979).
M. Lange, Ph.D. thesis, K.U. Leuven, 2003.
L. Van Look, M. J. Van Bael, K. Temst, J. G. Rodrigo, M. Morelle, V. V. Moshchalkov, and Y. Bruynseraede, Physica C 0921-4534 10.1016/S0921-4534(99) 00701-7 332, 356 (2000); M. J. Van Bael, L. Van Look, K. Temst, M. Lange, J. Bekaert, U. May, G. Guntherodt, V. V. Moshchalkov, and Y. Bruynseraede, Physica C 332, 12 (2000).
L. Van Look, M. J. Van Bael, K. Temst, J. G. Rodrigo, M. Morelle, V. V. Moshchalkov, and Y. Bruynseraede, Physica C 0921-4534 10.1016/S0921-4534(99) 00701-7 332, 356 (2000); M. J. Van Bael, L. Van Look, K. Temst, M. Lange, J. Bekaert, U. May, G. Guntherodt, V. V. Moshchalkov, and Y. Bruynseraede, Physica C 332, 12 (2000).
M. Lange, M. J. Van Bael, A. V. Silhanek, and V. V. Moshchalkov, Phys. Rev. B 72, 052507 (2005).
A. V. Silhanek, L. Van Look, R. Jonckheere, B. Y. Zhu, S. Raedts, and V. V. Moshchalkov, Phys. Rev. B 72, 014507 (2005).
