Magnetoresistance of Si/Nb/Si Trilayers

• Authors: I. Zaytseva , M. Cieplak , A. Abal'oshev , P. Dluzewski , G. Grabecki , W. Plesiewicz , L. Zhu , C. Chien
• Languages of publication: EN

Abstracts

EN

We study the superconductor-insulator transition in Si/Nb/Si trilayers, in which the thickness of Si is fixed at 10 nm, and the nominal thickness of Nb changes in the range between d = 20 nm down to d = 0.3 nm. The transmission electron microscopy indicates the formation of the mixed Nb-Si layer for small d. Both the thickness-induced, and the magnetic-field induced superconductor-insulator transition is observed. The crossing point of the isotherms at the critical field B_{c} decreases with decreasing d, and it is T-independent at temperatures below 300 mK. At larger fields the weak peak in magnetoresistance appears in some of the films.

Keywords

EN

74.62.-c; 74.25.F-; 74.25.Ha; 74.62.En

Discipline

• 74.62.En: Effects of disorder
• 74.25.Ha: Magnetic properties including vortex structures and related phenomena(for vortices, magnetic bubbles, and magnetic domain structure, see 75.70.Kw)
• 74.25.F-: Transport properties
• 74.62.-c: Transition temperature variations, phase diagrams

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 118
• Issue: 2
• Pages: 406-408

Dates

published

2010-08

Contributors

author

I. Zaytseva

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

M. Cieplak

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

A. Abal'oshev

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

P. Dluzewski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

G. Grabecki

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

W. Plesiewicz

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

L. Zhu

• Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218, USA

author

C. Chien

• Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218, USA

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Identifiers

DOI

10.12693/APhysPolA.118.406