Quantized Hall resistance in 2D electron systems arises due to edge modes. However, quantum transport in the extreme 1D limit is not as well understood, because quasi-1D semiconductor devices are highly susceptible to localization from disorder. Highly ballistic electron waveguides can now be routinely created at the LaAlO3/SrTiO3 (LAO/STO) interface using conductive atomic force microscopy lithography. These channels exhibit quantized ballistic conduction which is associated with lateral and vertical confinement within the waveguide. In this work, we investigate the transport characteristics of nanoscale Hall crosses. By creating transverse voltage probing leads inside the gated region of the waveguide, we can explore the interplay between confinement potential and magnetic field, and potentially investigate the transition between 1D waveguide modes and 2D edge states.
*We would like to acknowledge support from the Vannevar Bush Faculty Fellowship program sponsored by the Basic Research Office of the Assistant Secretary of Defense for Research and Engineering and funded by the ONR through grant N00014-15-1-2847. The work at University of Wisconsin-Madison was supported
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Presenters
ADITI NETHWEWALA
Department of Physics and Astronomy, University of Pittsburgh
Authors
ADITI NETHWEWALA
Department of Physics and Astronomy, University of Pittsburgh
Anthony Tylan-Tyler
Department of Physics and Astronomy, University of Pittsburgh
Yuhe Tang
Physics and Astronomy, University of Pittsburgh
Department of Physics and Astronomy, University of Pittsburgh
Univ of Pittsburgh
Jianan Li
Univ of Pittsburgh
University of Pittsburgh
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
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
