INVESTIGADORES
LUCCAS Roberto FabiÁn
artículos
Título:
Freezing vortex rivers
Autor/es:
A.V. SILHANEK; R.G.B. KRAMER; J. VAN DE VONDEL; V.V. MOSHCHALKOV; M.V. MILOEVIC; G.R. BERDIYOROV; F.M. PEETERS; R.F. LUCCAS; T. PUIG
Revista:
PHYSICA C - SUPERCONDUTIVITY
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2010 vol. 470 p. 726 - 729
ISSN:
0921-4534
Resumen:
We demonstrate experimentally and theoretically that the dissipative state at high current densities of superconducting samples with a periodic array of holes consist of flux rivers resulting from a short range attractive interaction between vortices. This dynamically induced vortex?vortex attraction results from the migration of quasiparticles out of the vortex core. We have directly visualized the formation of vortex chains by scanning Hall microscopy after freezing the dynamic state by a field cooling procedure at constant bias current. Similar experiments carried out in a sample without holes show no hint of flux river formation.