Interfacial spectroscopic characterization of organic/ferromagnet hetero-junction of 3,4,9,10-perylene-teracarboxylic dianhydride-based organic spin valves

Jhen Yong Hong, Kui Hon Ou Yang, Bo Yao Wang, Kai Shin Li, Hung Wei Shiu, Chia Hao Chen, Yuet Loy Chan, Der Hsin Wei, Fan Hsiu Chang, Hong Ji Lin, Wen Chung Chiang, Minn Tsong Lin

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15 Citations (Scopus)

Abstract

We report interfacial characterization of 3,4,9,10-perylene-teracarboxylic dianhydride (PTCDA)-based organic spin valves (OSV) dusted with a thin layer of partially oxidized alumina at the organic semiconductor (OSC)/ferromagnet (FM) interfaces. Up to 13.5% magnetoresistance is achieved at room temperature. X-ray photoelectron spectroscopy measurements reveal interfacial electronic interaction between PTCDA and FM while the application of a thin alumina layer at the PTCDA/FM interfaces prevents the electronic hybridization and effectively preserves the spin injection into the OSC spacer. This finding demonstrates the critical effect of interfacial structure on magnetotransport behavior in OSV.

Original languageEnglish
Article number083301
JournalApplied Physics Letters
Volume104
Issue number8
DOIs
Publication statusPublished - 2014 Jan 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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