Interfacial chemical states of resistance-switching metal/Pr0.7 Ca0.3MnO3 interfaces

R. Yasuhara, T. Yamamoto, I. Ohkubo, H. Kumigashira, M. Oshima

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

The relationship between interfacial chemical states and resistance-switching (RS) behaviors at the metal/Pr0.7Ca 0.3MnO3 (PCMO) interfaces has been studied by photoemission spectroscopy and x-ray absorption spectroscopy. For Al/PCMO interfaces that exhibit RS behavior, redox reactions between Al and Mn ions occur at the interface. In sharp contrast, no chemical reactions occur at Pt/PCMO interfaces that do not exhibit RS behavior. These results strongly suggest that the interfacial transition layer due to the redox reactions is responsible for the RS behavior at metal/PCMO interfaces.

Original languageEnglish
Article number132111
JournalApplied Physics Letters
Volume97
Issue number13
DOIs
Publication statusPublished - 2010 Sep 27
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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