Scanning probe manipulation of magnetism at the LaAlO 3/ SrTiO 3 heterointerface

Beena Kalisky, Julie A. Bert, Christopher Bell, Yanwu Xie, Hiroki K. Sato, Masayuki Hosoda, Yasuyuki Hikita, Harold Y. Hwang, Kathryn A. Moler

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

Manipulation of magnetism is a longstanding goal of research in exotic materials. In this work, we demonstrate that the small ferromagnetic patches in LaAlO 3/SrTiO 3 heterostructures can be dramatically changed by in situ contact of a scanning probe. Our results provide a platform for manipulation of small magnets through either a strong magneto-elastic coupling or sensitivity to surface modification. The ability to locally control magnetism is particularly interesting due to the presence of superconductivity with strong spin-orbit coupling in LaAlO 3/SrTiO 3.

Original languageEnglish
Pages (from-to)4055-4059
Number of pages5
JournalNano Letters
Volume12
Issue number8
DOIs
StatePublished - 8 Aug 2012

Keywords

  • Heterointerfaces
  • complex oxides
  • magnetism
  • scanning SQUID microscopy

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