Specific surface effect on transport properties of NiO/MgO heterostructured nanowires

Keisuke Oka, Takeshi Yanagida, Kazuki Nagashima, Hidekazu Tanaka, Shu Seki, Yoshihito Honsho, Manabu Ishimaru, Akihiko Hirata, Tomoji Kawai

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

NiO heterostructured nanowires are promising building blocks due to the nonvolatile resistive switching in nanoscale. Here, we report on the noncontact transport measurements of single crystalline NiO/MgO heterostructured nanowires by utilizing a microwave conductivity method. We found the substantial discrepancy up to four orders of magnitude between the heterostructured nanowires and heterothin films on the resistivity when the bulk resistivity increased, whereas the reasonable agreement was found for relatively conductive range. The origin of such huge discrepancy was interpreted in terms of both the large specific surface area of nanowires and the surface transport events of insulative NiO.

Original languageEnglish
Article number133110
JournalApplied Physics Letters
Volume95
Issue number13
DOIs
Publication statusPublished - Oct 12 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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