Two-dimensional superconductivity at (110) LaAlO3/SrTiO3 interfaces Academic Article uri icon


  • © 2014 AIP Publishing LLC. Novel low dimensional quantum phenomena at (110) LaAlO3/SrTiO3 (LAO/STO) interfaces are expected after the quasi two dimensional electron gas similar to that of (001) LAO/STO interfaces was found at this (110) system. Here, we report the two dimensional superconductivity with a superconducting transition temperature of ≅ 184 mK at (110) LAO/STO interfaces. The two dimensional characteristics of the superconductivity are consistent with our analysis based on a Berezinskii-Kosterlitz-Thouless transition. The estimated superconducting layer thickness is about 18 nm. This discovery may inspire new studies of LAO/STO interfaces and open additional opportunities for design of novel oxide electronic devices.

author list (cited authors)

  • Han, Y., Shen, S., You, J., Li, H., Luo, Z., Li, C., ... Nie, J.

citation count

  • 24

publication date

  • November 2014