Pramana

, Volume 26, Issue 1, pp 61–66 | Cite as

Non-ohmic conduction and electrical switching under pressure of the charge transfer complexo-tolidine-iodine

  • Hemamalini Naik
  • S V Subramanyam
Solid State Physics

Abstract

The current voltage characteristics ofo-tolidine-iodine, with stoichiometry 1:1 grown from benzene, have been studied under high pressures upto 6 GPa atT=300 K andT=77 K. The characteristics show a pronounced deviation from ohmicity beyond a certain current for all pressures studied. At room temperature, beyond a threshold field the system switches from a low conductingOFF state to a high conductingON state with σONOFF ∼ 103. TheOFF state can be restored by the application of an a.c. pulse of low frequency. The temperature dependence of the two states studied indicates that theOFF state is semiconducting while theON state, beyond a certain applied pressure is metallic. The characteristics atT=77 K do not show any switching.

Keywords

Non-ohmic conduction electrical switching high pressure charge transfer complex 

PACS No.

72.15 72.20 72.80 

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Copyright information

© the Indian Academy of Sciences 1986

Authors and Affiliations

  • Hemamalini Naik
    • 1
  • S V Subramanyam
    • 1
  1. 1.Department of PhysicsIndian Institute of ScienceBangaloreIndia

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