Spin Polarized and Degenerate Tunneling Spectra in Intrinsic Josephson Junctions of Bi2212
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.
M. Ozdemir et al., "Spin Polarized and Degenerate Tunneling Spectra in Intrinsic Josephson Junctions of Bi2212," Physica Status Solidi (C) Current Topics in Solid State Physics, vol. 4, no. 2, pp. 563-566, Wiley-VCH Verlag, Jul 2007.
The definitive version is available at http://dx.doi.org/10.1002/pssc.200673312
International Conference on Superlattices, Nano-structures and Nano-devices (2006: Jul. 30-Aug. 4, Istanbul, Turkey)
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)
Article - Conference proceedings
© 2007 Wiley-VCH Verlag, All rights reserved.