Spin Polarized and Degenerate Tunneling Spectra in Intrinsic Josephson Junctions of Bi2212

Abstract

Tunneling characteristics of HgBr2 intercalated superconducting Bi2212 single crystals have been obtained by using 10x10 μm2 intrinsic Josephson junction stacks, so called mesa structures. The spin degenerate current is driven along the c-axis with Au layer using point contact tunneling assembly at 4,2 K. The spin polarized current is also driven along the c-axis of crystals with Au/Co/Au multilayer. In order to understand the role of ferromagnetic layer (Co), quasiparticle branches are examined with and without magnetic field. The magnetic field evolution of switching currents are obtained for gaining further insight about the spin injection through the stack.

Meeting Name

International Conference on Superlattices, Nano-structures and Nano-devices (2006: Jul. 30-Aug. 4, Istanbul, Turkey)

Department(s)

Physics

Keywords and Phrases

Excavation; Imaging techniques; Microscopic examination; Nanostructures; Scanning tunneling microscopy; Intrinsic Josephson junctions; Nano-devices; Spin polarized; Tunneling characteristics; Tunneling spectra

International Standard Serial Number (ISSN)

1862-6351

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2007 Wiley-VCH Verlag, All rights reserved.

Publication Date

01 Jul 2007

Link to Full Text

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