ISSN:
1434-6036
Keywords:
PACS. 74.25.Ha Magnetic properties – 74.20.De Phenomenological theories (two-fluid, Ginzburg-Landau, etc.) – 85.25.Kx Superconducting wires, fibers, and tapes
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: Theoretical and experimental magnetizations of lead nanowire arrays well below the superconducting transition temperature Tc are described. The magnetic response of the array was investigated with a SQUID magnetometer. Hysteretic behaviour and phase transitions have been observed in sweeping up and down the external magnetic field at different temperatures. The Meissner and Abrikosov states were also experimentally observed in this apparently type-I superconductor. This fact brings to the fore the non-trivial behaviour of the critical boundary κ c ( = 1/ in bulk materials) between type-I and type-II phase transitions at mesoscopic scales. The time-independent Ginzburg-Landau equations particularized to cylindrically symmetric configurations enable one to explain and reproduce the experimental magnetization curves within 10% of error.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1140/epjb/e2003-00146-y
Permalink
