Non-Coulombic frictional drag currents in coupled LaAlO<sub>3</sub>/SrTiO<sub>3</sub> nanowires

ORAL

Abstract

Frictional drag phenomena are investigated in coupled nanowires formed at LaAlO3/SrTiO3 heterointerfaces. The weak decay of drag resistance with increasing wire separation rules out Coulomb interactions as the dominant coupling mechanism. The observed unidirectional current drag is explained using a simple model that invokes slight asymmetries within nanowires. These results provide new insights into non-Coulombic electron-electron interaction effects that must be accounted for in any full description of electron transport at oxide interfaces.

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We are grateful to David Pekker for helpful discussions. The work at the University of Pittsburgh was supported by funding from the DOE Office of Basic Energy Sciences under award number DOE DE-SC0014417. The work at University of Wisconsin-Madison (thin film design, growth and characterizations) wa

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Presenters

  • Yuhe Tang

    • Physics and Astronomy, University of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh
    • Univ of Pittsburgh

Authors

  • Yuhe Tang

    • Physics and Astronomy, University of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh
    • Univ of Pittsburgh

  • Anthony Tylan-Tyler

    • Department of Physics and Astronomy, University of Pittsburgh

  • Hyungwoo Lee

    • University of Wisconsin-Madison
    • Univ of Wisconsin-Madison
    • University of Wisconsin
    • University of Wisconsin–Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison
    • Physics, University of Wisconsin–Madison
    • Department of Materials Science and Engineering, University of Wisconsin - Madison

  • Jungwoo Lee

    • University of Wisconsin-Madison
    • Department of Materials Science and Engineering, University of Wisconsin-Madison
    • Department of Materials Science and Engineering, University of Wisconsin - Madison

  • Michelle Tomczyk

    • Pennsylvania State University
    • Department of Physics and Astronomy, University of Pittsburgh

  • Mengchen Huang

    • Univ of California, Santa Barbara
    • Department of Physics and Astronomy, University of Pittsburgh
    • Physics, University of California, Santa Barbara

  • Chang-Beom Eom

    • University of Wisconsin-Madison
    • Univ of Wisconsin-Madison
    • Univ of Wisconsin, Madison
    • Department of Material Science and Engineering, University of Wisconsin-Madison
    • Matls Sci & Eng, University of Wisconsin-Madison
    • University of Wisconsin
    • Department of Materials Science and Engineering, University of Wisconsin-Madison
    • University of Wisconsin–Madison
    • MS&E, University of Wisconsin
    • Physics, University of Wisconsin–Madison
    • Department of Materials Science and Engineering, University of Wisconsin - Madison

  • Patrick Irvin

    • Univ of Pittsburgh
    • University of Pittsburgh
    • Physics and Astronomy, University of Pittsburgh
    • Department of Physics and Astronomy, Univ of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh
    • Physics, University of Pittsburgh
    • Physics and Astronomy, Univ of Pittsburgh

  • Jeremy Levy

    • Univ of Pittsburgh
    • Physics, Univ of Pittsburgh
    • University of Pittsburgh
    • Physics and Astronomy, University of Pittsburgh
    • Department of Physics and Astronomy, Univ of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh
    • Physics, University of Pittsburgh
    • Physics and Astronomy, Univ of Pittsburgh