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Spin-polarised transport and evidence for novel spin valve behavior in YBCO/LSMO/YBCO hybrid structures

Journal Article


Abstract


  • Anisotropic RBa2Cu3O7ô high temperature superconductors (RBCO), where R represents the rare earth elements Y, Nd and Pr, as well as the layered manganite La2/3Sr1/3MnO3 (LSMO), are layered metallic systems where the interlayer current transport occurs via sequential tunneling of charge carriers. We present here experimental results of interlayer spin polarized transport studies carried out on YBa2Cu3O7ô/La2/3Sr1/3MnO3/YBa2Cu3O7ô thin film multilayers. The tunneling of spin polarized charge carriers between the YBCO layers through LSMO leads to a novel spin valve effects at high temperatures. Our samples showed large magneto-resistance with a sharp switching between the high and low resistance states, which we assume corresponds to antiparallel and parallel alignment of the moments of these hybrid structures. The investigation of these promising hybrid structures is aimed at understanding the science of the new spin-based devices, laying the foundation for a new generation of ultra-fast, non-volatile electronics.

Publication Date


  • 2007

Citation


  • Alvarez, G. G., Wang, X., Shi, D. & Dou, S. Xue. (2007). Spin-polarised transport and evidence for novel spin valve behavior in YBCO/LSMO/YBCO hybrid structures. Physica C: Superconductivity and its Applications, 460 (Part 1), 434-435.

Scopus Eid


  • 2-s2.0-34548185849

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/213

Number Of Pages


  • 1

Start Page


  • 434

End Page


  • 435

Volume


  • 460

Issue


  • Part 1

Abstract


  • Anisotropic RBa2Cu3O7ô high temperature superconductors (RBCO), where R represents the rare earth elements Y, Nd and Pr, as well as the layered manganite La2/3Sr1/3MnO3 (LSMO), are layered metallic systems where the interlayer current transport occurs via sequential tunneling of charge carriers. We present here experimental results of interlayer spin polarized transport studies carried out on YBa2Cu3O7ô/La2/3Sr1/3MnO3/YBa2Cu3O7ô thin film multilayers. The tunneling of spin polarized charge carriers between the YBCO layers through LSMO leads to a novel spin valve effects at high temperatures. Our samples showed large magneto-resistance with a sharp switching between the high and low resistance states, which we assume corresponds to antiparallel and parallel alignment of the moments of these hybrid structures. The investigation of these promising hybrid structures is aimed at understanding the science of the new spin-based devices, laying the foundation for a new generation of ultra-fast, non-volatile electronics.

Publication Date


  • 2007

Citation


  • Alvarez, G. G., Wang, X., Shi, D. & Dou, S. Xue. (2007). Spin-polarised transport and evidence for novel spin valve behavior in YBCO/LSMO/YBCO hybrid structures. Physica C: Superconductivity and its Applications, 460 (Part 1), 434-435.

Scopus Eid


  • 2-s2.0-34548185849

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/213

Number Of Pages


  • 1

Start Page


  • 434

End Page


  • 435

Volume


  • 460

Issue


  • Part 1