Magnetism and Conductivity Along Structural Domain Walls of SrTiO3

Yiftach Frenkel, Yanwu Xie, Harold Y. Hwang, Beena Kalisky

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The interface between the oxide insulators LaAlO3 and SrTiO3 (LAO/STO) hosts a two-dimensional electron gas. The combination of interfacial conductivity and superconductivity at ultra-low temperatures with the physical phenomena of the oxide parent materials has fueled extensive research in the field since its discovery in 2004. Scanning superconducting quantum interference device (SQUID) measurements have shown that structural domain walls, formed below 105 K, modulate the current flow at the interface and recently revealed weak magnetic signals along the same domain structure. Here we use scanning SQUID to investigate the temperature dependence of different electronic properties of the LAO/STO interface. We find correlation between magnetism and conductivity, which are both spatially modulated on the domain structure. This data suggests a possible relation between the populations of electrons participating in each order.

Original languageEnglish
Pages (from-to)195-197
Number of pages3
JournalJournal of Superconductivity and Novel Magnetism
Volume33
Issue number1
DOIs
StatePublished - 1 Jan 2020

Bibliographical note

Publisher Copyright:
© 2020, The Author(s).

Keywords

  • Conductivity
  • Ferroelectricity
  • Magnetism
  • Oxide interfaces
  • Polarity
  • Scanning SQUID microscopy

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