Low-temperature structure of indium quantum chains on silicon

C. Kumpf, O. Bunk, J.H. Zeysing, Y. Su, M. Nielsen, R.L. Johnson, R. Feidenhans'l, K. Bechgaard

    Research output: Contribution to journalJournal articleResearchpeer-review


    The array of quasi-one-dimensional indium chains in the Si(111)- (4×1)-In surface reconstruction exhibits a phase transition to a low-temperature (8×2) phase. It has been suggested that this phase transition is related to a charge density wave (CDW) formation. The x-ray diffraction results presented here demonstrate that at 20 K the CDW has not yet condensed into a superstructure even though good transverse coupling was established. This indicates that CDW formation cannot be the driving force for the phase transition. Furthermore we elucidate the subtle highly anisotropic interchain correlations and reveal the detailed atomic structure of the low-temperature (8×2) phase.

    © 2000 The American Physical Society
    Original languageEnglish
    JournalPhysical Review Letters
    Issue number23
    Pages (from-to)4916-4919
    Publication statusPublished - 2000


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