L64.00002. Cryogenic Piezoforce Microscopy of Sketched LaAlO3/SrTiO3 Nanostructures

Presented by: Joseph Albro


Abstract

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).

Authors

  • Joseph Albro
  • Jessica Montone
  • Feng Bi
  • Mengchen Huang
  • Jungwoo Lee
  • Hyungwoo Lee
  • Chang-Beom Eom
  • Patrick Irvin
  • Jeremy Levy


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