Electron tunneling in (SN)x and conducting organic salts

P. M. Chaikin, P. K. Hansma, R. L. Greene

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We have made tunnel junctions on (SN)x and several tetracyanoquinodimethane (TCNQ) compounds by evaporation of Pb, Sn, and In and by application of a Hg-In amalgam. Junctions formed with (SN)x and HMTSeF-TCNQ show the usual gap structure of the superconducting counterelectrode when cooled to liquid-helium temperatures. Although good tunnel junctions are formed, we are not able to detect a superconducting gap in the (SN)x down to 60 mK. A broad zero-bias anomaly suggests that the surface of (SN)x consists of small particles which are not superconducting and hence are similar to (SNx) films.

    Original languageEnglish (US)
    Pages (from-to)179-183
    Number of pages5
    JournalPhysical Review B
    Volume17
    Issue number1
    DOIs
    StatePublished - 1978

    ASJC Scopus subject areas

    • Condensed Matter Physics

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