Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session L64: Two-Dimensional Electron gas in STO-based Heterostructures
8:00 AM–11:00 AM,
Wednesday, March 4, 2020
Room: Mile High Ballroom 4E
Sponsoring
Unit:
DMP
Chair: Tiffany Kaspar, Pacific Northwest Natl Lab
Abstract: L64.00002 : Cryogenic Piezoforce Microscopy of Sketched LaAlO3/SrTiO3 Nanostructures*
View Presentation
Abstract 
Presenter:
Joseph Albro
(Department of Physics and Astronomy, University of Pittsburgh)
Authors:
Joseph Albro
(Department of Physics and Astronomy, University of Pittsburgh)
Jessica Montone
(Department of Physics and Astronomy, University of Pittsburgh)
Feng Bi
(Department of Physics and Astronomy, University of Pittsburgh)
Mengchen Huang
(Department of Physics and Astronomy, University of Pittsburgh)
Jung-Woo Lee
(Department of Materials Science and Engineering, University of Wisconsin-Madison)
Hyungwoo Lee
(Department of Materials Science and Engineering, University of Wisconsin-Madison)
Chang-Beom Eom
(Department of Materials Science and Engineering, University of Wisconsin-Madison)
Patrick Irvin
(Department of Physics and Astronomy, University of Pittsburgh)
Jeremy Levy
(Department of Physics and Astronomy, University of Pittsburgh)
It is possible to reveal otherwise hidden electronic properties in 2D oxide interfaces, namely LaAlO3/SrTiO3, by using local probes instead of traditional bulk measurements. For example, scanning single electron transistor microscopy has shown enhanced transport along ferroelastic domain boundaries [1]. Furthermore, Frenkel et al. have demonstrated that the local application of pressure to the interface of LaAlO3/SrTiO3 can reveal ferroelastic domain boundaries [2]. Here we detail our efforts to reveal electron transport in “sketched” LaAlO3/SrTiO3 nanostructures [3] using a modified vacuum AFM at room and low (T < 25 K) temperatures.
[1] M. Honig et al., Nature Materials 12, 1112 (2013).
[2] Y. Frenkel et al., Nature Materials 16, 1203 (2017).
[3] C. Cen et al., Nature Materials 7, 298 (2008).
*JL acknowledges a Vannevar Bush Faculty Fellowship, funded by ONR (N00014-15-1-2847). C-BE acknowledges NSF DMREF (DMR-1629270), AOARD (FA2386-15-1-4046), AFOSR (FA9550-15-1-0334).
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