Charge Transfer in Iridate-Manganite Superlattices

Satoshi Okamoto, John Nichols, Changhee Sohn, So Yeun Kim, Tae Won Noh, Ho Nyung Lee

Research output: Contribution to journalArticlepeer-review

59 Scopus citations

Abstract

Charge transfer in superlattices consisting of SrIrO3 and SrMnO3 is investigated using density functional theory. Despite the nearly identical work function and nonpolar interfaces between SrIrO3 and SrMnO3, rather large charge transfer was experimentally reported at the interface between them. Here, we report a microscopic model that captures the mechanism behind this phenomenon, providing a qualitative understanding of the experimental observation. This leads to unique strain dependence of such charge transfer in iridate-manganite superlattices. The predicted behavior is consistently verified by experiment with soft X-ray and optical spectroscopy. Our work thus demonstrates a new route to control electronic states in nonpolar oxide heterostructures.

Original languageEnglish
Pages (from-to)2126-2130
Number of pages5
JournalNano Letters
Volume17
Issue number4
DOIs
StatePublished - Apr 12 2017

Keywords

  • Oxide heterostructures
  • X-ray and optical measurements
  • density functional theory
  • electronic reconstruction
  • modeling

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