L64.00007. Surface Acoustic Wave Generation and Detection on LaAlO3/SrTiO3

Presented by: Dengyu Yang


We aim to generate and detect surface acoustic waves (SAW) in LaAlO3/SrTiO3 heterostructures. Using a well-developed conductive-AFM lithography technique [1], we “sketch” interdigitated transducers (IDT) on LaAlO3/SrTiO3 “canvases”, which convert electronic signals into SAW and vice-versa. Two sets of IDTs are written on the structure to function as a generator and detector. SAW can be used to generate dynamic potentials based on piezoelectric properties of LaAlO3/SrTiO3, and have the potential to drive electrons through nanostructures, a property that could be useful for quantum information applications. [1] C. Cen, et al., Nature Materials 7, 298 (2008).


  • Dengyu Yang
  • Yun-Yi Pai
  • Yuhe Tang
  • Muqing Yu
  • Yang Hu
  • Hyungwoo Lee
  •  Jung-Woo Lee
  • Chang-Beom Eom
  • Patrick Irvin1
  • Jeremy Levy


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