Improved conductance quantization in gold point contacts in high magnetic fields

F. Manders, A. K. Geim, J. C. Maan

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We have studied the influence of magnetic field on room-temperature quantization in normal-metal point contacts by measuring the transient conductance during a mechanical break of the electric contact between two macroscopic pieces of Au. It is found that, with increasing the magnetic field parallel to the movement of a sharp tip retracted from a mechanical contact with a large Au plate, the conductance steps become increasingly better defined. We attribute this observation to a micro-mechanical force caused by magnetic field and acting on the atomic wires drawn by the tip at the final stages of the breaking process.
    Original languageEnglish
    Pages (from-to)332-335
    Number of pages3
    JournalPhysica B: Condensed Matter
    Volume294-295
    DOIs
    Publication statusPublished - Jan 2001

    Keywords

    • point contacts
    • quantum wires
    • magnetic field

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