AC susceptibility of thin Pb films in intermediate and mixed state

0371271 - FZÚ 2012 RIV NL eng J - Journal Article
Janů, Zdeněk - Švindrych, Zdeněk - Truněček, O. - Kúš, P. - Plecenik, A.
AC susceptibility of thin Pb films in intermediate and mixed state.
Physica. C. Roč. 471, 23-24 (2011), s. 1647-1650. ISSN 0921-4534. E-ISSN 1873-2143
R&D Projects: GA MŠMT(CZ) ME10069
Institutional research plan: CEZ:AV0Z10100520
Keywords : intermediate state * mixed state * AC susceptibility
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.014, year: 2011

Thin films of type I superconductors of a thickness comparable or less than a flux penetration length behave like type II superconductors in a mixed state. With decreasing film thickness normal domains carrying a magnetic flux get smaller with smaller number of flux quanta per domain and finally transform into single quantum flux lines, i.e. quantum vortices similar to those found in type II superconductors. We give an evidence of this behavior from the measurements of the nonlinear response of a total magnetic moment to an applied AC magnetic field, directly from the temperature dependence of an AC susceptibility
Permanent Link: http://hdl.handle.net/11104/0204823