B48.00011. Superconductivity at the LaAlO3/SrTiO3 1D Zigzag Nanowires

Presented by: Yun-Yi Pai


LaAlO3/SrTiO3 exhibits electron pairing far outside of the superconducting state [1]. The superconducting state of LaAlO3/SrTiO3 also exhibits an intrinsic 1D nature [2] which has been linked to ferroelastic domain structure in the SrTiO3. We further explore the role of ferroelastic domain patterns on superconductivity by creating a series of “zig-zag” nanowire structures. We find that straight nanowires are comparatively more resistive, both in their normal and superconducting state, than channels that have a zig-zag structure. We discuss possible interplay between the charge degree of freedom and the structural domains and employ state-of-the-art phase-field modeling to simulate the relevant domain morphologies. [1] G Cheng et al., Nature 521, 196 (2015) [2] Y-Y. Pai et al., Physical Review Letters 120 (14), 147001 (2018). [3] Y-Y. Pai et al., Reports on Progress in Physics 81 (3), 036503 (2018). *JL acknowledges support from a Vannevar Bush Faculty Fellowship (N00014-15-1-2847). C-BE acknowledges DOE Office of Science, Office of Basic Energy Sciences (DE-FG02-06ER46327).


  • Yun-Yi Pai
  • Megan Briggeman
  • Hyungwoo Lee
  • Jung-Woo Lee
  • Xiaoxing Cheng
  • Muqing Yu
  • Mengchen Huang
  • Jianan Li
  • Chang-Beom Eom
  • Long-Qing Chen
  • Patrick Irvin
  • Jeremy Levy


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