Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101945
Title: Electron–electron interactions of the multi-Cooper-pairs in the 1D limit and their role in the formation of global phase coherence in quasi-one-dimensional superconducting nanowire arrays
Authors: Wong, C. H.
Buntov, E. A.
Zatsepin, A. F.
Lortz, R.
Issue Date: 2018
Publisher: Elsevier B.V.
Citation: Electron–electron interactions of the multi-Cooper-pairs in the 1D limit and their role in the formation of global phase coherence in quasi-one-dimensional superconducting nanowire arrays / C. H. Wong, E. A. Buntov, A. F. Zatsepin, et al. — DOI 10.1016/j.physc.2018.08.003 // Physica C: Superconductivity and its Applications. — 2018. — Vol. 553. — P. 33-37.
Abstract: Nanostructuring of superconducting materials to form dense arrays of thin parallel nanowires with significantly large transverse Josephson coupling has proven to be an effective way to increase the upper critical field of superconducting elements by as much as two orders of magnitude as compared to the corresponding bulk materials and, in addition, may cause considerable enhancements in their critical temperatures. Such materials have been realized in the linear pores of mesoporous substrates or exist intrinsically in the form of various quasi-1D crystalline materials. The transverse coupling between the superconducting nanowires is determined by the size-dependent coherence length ξ0. In order to obtain ξ0 over the Langer–Ambegaokar–McCumber–Halperin (LAMH) theory, extensive experimental fitting parameters have been required over the last 40 years. We propose a novel Monte Carlo algorithm for determining ξ0 of the multi-Cooper pair system in the 1D limit. The concepts of uncertainty principle, Pauli-limit, spin flip mechanism, electrostatic interaction, thermal perturbation and co-rotating of electrons are considered in the model. We use Pb nanowires as an example to monitor the size effect of ξ0 as a result of the modified electron-electron interaction without the need for experimental fitting parameters. We investigate how the coherence length determines the transverse coupling of nanowires in dense arrays. This determines whether or not a global phase-coherent state with zero resistance can be formed in such arrays. Our Monte Carlo results are in very good agreement with experimental data from various types of superconducting nanowire arrays. © 2018 Elsevier B.V.
Keywords: 1D SUPERCONDUCTIVITY
MONTE CARLO METHOD
PHASE FLUCTUATIONS
CRYSTALLINE MATERIALS
ELECTRON-ELECTRON INTERACTIONS
ELECTRONS
MESOPOROUS MATERIALS
NANOWIRES
ORGANIC SUPERCONDUCTING MATERIALS
1D SUPERCONDUCTIVITY
GLOBAL PHASE COHERENCES
MONTE CARLO ALGORITHMS
PHASE FLUCTUATION
SUPERCONDUCTING ELEMENTS
SUPERCONDUCTING NANOWIRE
SUPERCONDUCTING NANOWIRE ARRAYS
UNCERTAINTY PRINCIPLES
MONTE CARLO METHODS
URI: http://hdl.handle.net/10995/101945
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85051670935
PURE ID: 7759827
10ea82bf-ada2-404b-8b17-aa5026be3165
ISSN: 9214534
DOI: 10.1016/j.physc.2018.08.003
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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