Role of magnetic anisotropy in spin-filter junctions

Chopdekar, R V; Wong, F; Nelson-Cheeseman, B B; Liberati, M; Arenholz, E; Suzuki, Y

doi:10.1103/PhysRevB.83.224426

Title: Role of magnetic anisotropy in spin-filter junctions

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Abstract

We have fabricated oxide-based spin-filter junctions in which we demonstrate that magnetic anisotropy can be used to tune the transport behavior of spin-filter junctions. We have demonstrated spin-filtering behavior in La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/CoCr{sub 2}O{sub 4}/Fe{sub 3}O{sub 4} and La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/MnCr{sub 2}O{sub 4}/Fe{sub 3}O{sub 4} junctions where the interface anisotropy plays a significant role in determining transport behavior. Detailed studies of chemical and magnetic structure at the interfaces indicate that abrupt changes in magnetic anisotropy across the nonisostructural interface is the cause of the significant suppression of junction magnetoresistance in junctions with MnCr{sub 2}O{sub 4} barrier layers.

Authors:: Chopdekar, R V; Wong, F; Nelson-Cheeseman, B B; Liberati, M; Arenholz, E; Suzuki, Y

Publication Date:: Mon Jan 10 00:00:00 EST 2011

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: Advanced Light Source Division

OSTI Identifier:: 1026803

Report Number(s):: LBNL-4767E
Journal ID: ISSN 1098-0121; TRN: US1105134

DOE Contract Number:: DE-AC02-05CH11231

Resource Type:: Journal Article

Journal Name:: Physical Review. B, Condensed Matter and Materials Physics

Additional Journal Information:: Journal Volume: 83; Journal Issue: 22; Journal ID: ISSN 1098-0121

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; MAGNETORESISTANCE; SPIN; TRANSPORT

Citation Formats


                    Chopdekar, R V, Wong, F, Nelson-Cheeseman, B B, Liberati, M, Arenholz, E, and Suzuki, Y. Role of magnetic anisotropy in spin-filter junctions.  United States: N. p., 2011. 
        Web.  doi:10.1103/PhysRevB.83.224426.

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                    Chopdekar, R V, Wong, F, Nelson-Cheeseman, B B, Liberati, M, Arenholz, E, & Suzuki, Y. Role of magnetic anisotropy in spin-filter junctions.  United States.  https://doi.org/10.1103/PhysRevB.83.224426

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                    Chopdekar, R V, Wong, F, Nelson-Cheeseman, B B, Liberati, M, Arenholz, E, and Suzuki, Y. 2011.  
        "Role of magnetic anisotropy in spin-filter junctions".  United States.  https://doi.org/10.1103/PhysRevB.83.224426.  https://www.osti.gov/servlets/purl/1026803.

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@article{osti_1026803,

  title        = {Role of magnetic anisotropy in spin-filter junctions},

  author       = {Chopdekar, R V and Wong, F and Nelson-Cheeseman, B B and Liberati, M and Arenholz, E and Suzuki, Y},

  abstractNote = {We have fabricated oxide-based spin-filter junctions in which we demonstrate that magnetic anisotropy can be used to tune the transport behavior of spin-filter junctions. We have demonstrated spin-filtering behavior in La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/CoCr{sub 2}O{sub 4}/Fe{sub 3}O{sub 4} and La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/MnCr{sub 2}O{sub 4}/Fe{sub 3}O{sub 4} junctions where the interface anisotropy plays a significant role in determining transport behavior. Detailed studies of chemical and magnetic structure at the interfaces indicate that abrupt changes in magnetic anisotropy across the nonisostructural interface is the cause of the significant suppression of junction magnetoresistance in junctions with MnCr{sub 2}O{sub 4} barrier layers.},

  doi          = {10.1103/PhysRevB.83.224426},

  url          = {https://www.osti.gov/biblio/1026803},
  journal      = {Physical Review. B, Condensed Matter and Materials Physics},

  issn         = {1098-0121},

  number       = 22,

  volume       = 83,

  place        = {United States},

  year         = {Mon Jan 10 00:00:00 EST 2011},

  month        = {Mon Jan 10 00:00:00 EST 2011}

}

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