Nanomechanical Probes of Sketched LaAlO<sub>3</sub>/SrTiO<sub>3</sub> Single-Electron Transistors

Jessica Montone; Feng Bi; Mengchen Huang; Jung-Woo Lee; Hyungwoo Lee; Chang-Beom Eom; Patrick Irvin; Jeremy Levy

Nanomechanical Probes of Sketched LaAlO₃/SrTiO₃ Single-Electron Transistors

ORAL

Abstract

Nanoscale devices that manipulate single electrons present an exciting platform for the observation of electronic and mechanical effects. By utilizing the locally tunable metal-insulator transition at the interface of LaAlO₃/SrTiO₃, we create single-electron transistors using conducting atomic force microscope (c-AFM) lithography. The piezoelectric nature of LaAlO₃/SrTiO₃ gives way to an expected coupling between mechanical motion and electric charge within the device. We test this effect by applying pressure to the device using an insulating AFM tip while measuring changes in electron density. I describe our efforts to perform nanomechanical imaging of conductive structures on LaAlO₃/SrTiO₃. I describe our method of performing imaging in a cryogenic AFM system, as many interesting properties of single-electron devices are observed at low temperatures.

March 8, 2018, 4:03 PM – March 8, 2018, 4:15 PM

Presenters

Jessica Montone

University of Pittsburgh

Authors

Jessica Montone

University of Pittsburgh
Feng Bi

University of Pittsburgh
Mengchen Huang

University of Pittsburgh, Department of Physics and Astronomy, University of Pittsburgh
Jung-Woo Lee

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