Proximity-Driven Enhanced Magnetic Order at Ferromagnetic-Insulator-Magnetic-Topological-Insulator Interface

Mingda Li, Cui Zu Chang, Brian J. Kirby, Michelle E. Jamer, Wenping Cui, Lijun Wu, Peng Wei, Yimei Zhu, Don Heiman, Ju Li, Jagadeesh S. Moodera

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

Magnetic exchange driven proximity effect at a magnetic-insulator-topological-insulator (MI-TI) interface provides a rich playground for novel phenomena as well as a way to realize low energy dissipation quantum devices. Here we report a dramatic enhancement of proximity exchange coupling in the MI/magnetic-TI EuS/Sb2-xVxTe3 hybrid heterostructure, where V doping is used to drive the TI (Sb2Te3) magnetic. We observe an artificial antiferromagneticlike structure near the MI-TI interface, which may account for the enhanced proximity coupling. The interplay between the proximity effect and doping in a hybrid heterostructure provides insights into the engineering of magnetic ordering.

Original languageEnglish (US)
Article number087201
JournalPhysical review letters
Volume115
Issue number8
DOIs
StatePublished - Aug 17 2015

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Proximity-Driven Enhanced Magnetic Order at Ferromagnetic-Insulator-Magnetic-Topological-Insulator Interface'. Together they form a unique fingerprint.

Cite this