Effect of Magnetic Field on Quasiparticle Branches of Intrinsic Josephson Junctions with Ferromagnetic Layer

Abstract

The interlayer tunneling spectroscopy has been performed on micron-sized mesa arrays of HgBr2 intercalated superconducting Bi2212 single crystals. A ferromagnetic multilayer (Au/Co/Au) is deposited on top of the mesas. The spin-polarized current is driven along the c-axis of the mesas through a ferromagnetic Co layer and the hysteretic quasiparticle branches are observed at 4.2 K. Magnetic field evolution of hysteretic quasiparticle branches is obtained to examine the effect of injected spin-polarized current on intrinsic Josephson junction characteristics. It is observed that there is a gradual distribution in quasiparticle branches with the application of magnetic field and increasing field reduces the switching current progressively.

Department(s)

Physics

Second Department

Geosciences and Geological and Petroleum Engineering

Keywords and Phrases

Current density; Electron tunneling; Josephson junction devices; Magnetic fields; Spin polarization; Intrinsic Josephson junctions; Spin-polarized currents; Switching currents; Tunneling spectroscopy; Ferromagnetic materials

International Standard Serial Number (ISSN)

0921-4534

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2007 Elsevier, All rights reserved.

Publication Date

01 Sep 2007

Link to Full Text

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