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Flux line dynamics in unconventional superconductors

Titel Englisch Flux line dynamics in unconventional superconductors
Gesuchsteller/in Sigrist Manfred
Nummer 108002
Förderungsinstrument Projektförderung (Abt. I-III)
Forschungseinrichtung Institut für Theoretische Physik ETH Zürich
Hochschule ETH Zürich - ETHZ
Hauptdisziplin Theoretische Physik
Beginn/Ende 01.06.2006 - 31.05.2008
Bewilligter Betrag 20'200.00
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Keywords (4)

solid state physics; strongly correlated electron systems; unconventional superconductivity; flux line dynamics

Lay Summary (Englisch)

Lay summary
Superconductors in magnetic fields display highly complex phenomena, because magnetic field penetrates(type-II) superconductors as flux lines, which are vortices of the superfluid condensate. An interesting aspect of this so-called ''vortex matter'' is the dynamics of flux lines which is strongly influenced by the pinning of flux lines, usually, at defects of the material such as impurities and dislocations. The present project is concerned with exotic pinning mechanisms which can occur in certain unconventional superconductors whose condensate have a higher degree of complexity than ordinary superconductors. Some of these superconductors show surprising low flux flow rates seemingly incompatible with other measured properties such as the magnitude of critical supercurrents. High precision measurements of the magnetic flux decay are performed to test theoretical ideas that pinning could also occur on defects produced by the superconducting phase itself, e.g. at domain walls of the unconventional superconducting condensate. In this project experimental evidence for this kind of phenomenology has been observed among heavy fermion, skutterudite and some non-centrosymmetric superconductors.
Direktlink auf Lay Summary Letzte Aktualisierung: 21.02.2013

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