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Title: On the superconducting phase boundary for a mesoscopic square loop
Authors: Fomin, VM ×
Misko, VR
Devreese, JT
Moshchalkov, Victor #
Issue Date: 1997
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Series Title: Solid state communications vol:101 issue:5 pages:303-308
Conference: date:KATHOLIEKE UNIV LEUVEN,VASTE STOF FYS MAGNETISME LAB,B-3001 LOUVAIN,BELGIUM; STATE UNIV MOLDOVA,DEPT THEORET PHYS,KISHINEV 2009,MOLDOVA; MOLDAVIAN ACAD SCI,INST PHYS APPL,DEPT THEORY SEMICOND & QUANTUM ELECT,KISHINEV 2028,MOLDOVA; UNIV ANTWERP,RIJKSUNIV CTR ANTWERP,B-2020 ANTWERP,BELGIUM; EINDHOVEN UNIV TECHNOL,NL-5600 MB EINDHOVEN,NETHERLANDS
Abstract: A self-consistent solution of the Ginzburg-Landau equations for a mesoscopic superconducting square loop has been obtained. It has been shown that the inhomogeneous distribution of the amplitude of the order parameter inside the loop leads to the appearance of certain areas where it is much more difficult to rotate the superconducting condensate and which therefore sustain much higher applied magnetic fields. The interplay between the square symmetry of the loop and the cylindrical symmetry of the magnetic field results in different oscillatory superconducting phase boundaries which correspond to various phase boundary definitions. The most ''realistic'' criterion to define the phase boundary magnetic field(H)-temperature(T) is formulated; it allows to obtain a good agreement between the calculated H(T) curve and the experimentally observed one. Copyright (C) 1996 Elsevier Science Ltd
ISSN: 0038-1098
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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