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NOVEL SUPERSTRUCTURES OF ALKALI-DOPEDC60FILMS ONCu(111) ANDAg(111) SURFACES

Author

Listed:
  • C. C. KUO

    (Center for Condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan, R.O.C.)

  • C. H. LIN

    (Center for Condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan, R.O.C.)

  • WOEI WU PAI

    (Center for Condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan, R.O.C.)

  • K. C. LIN

    (Department of Physics, Fu Jen Catholic University, Taipei, Taiwan, R.O.C.)

  • T. B. TANG

    (Department of Physics, Hong Kong Baptist University, Hong Kong)

Abstract

We report a scanning tunneling microscopy (STM) study of potassium (K)-dopedC60(KxC60) onCu(111) andAg(111), with focus on the observation of novelK-induced superstructures. OnCu(111),K-intercalation leads to various superstructures, i.e., p(3 × 3), p(2 × 2), and a disordered "maze-like" structure. Concomitant removal ofC60-induced substrate reconstruction was also observed. OnAg(111),K-doping inducesC60reorientation and results in a p(2 × 2) superstructure. All observed superstructures suggest intrinsic inhomogeneity ofK-doping in fullerene materials, which must be further understood.

Suggested Citation

  • C. C. Kuo & C. H. Lin & Woei Wu Pai & K. C. Lin & T. B. Tang, 2007. "NOVEL SUPERSTRUCTURES OF ALKALI-DOPEDC60FILMS ONCu(111) ANDAg(111) SURFACES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 14(04), pages 739-743.
    • Handle: RePEc:wsi:srlxxx:v:14:y:2007:i:04:n:s0218625x07010172
    DOI: 10.1142/S0218625X07010172
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    Keywords

    STM; C60; fulleride; Cu(111); Ag(111); doping;
    All these keywords.

    JEL classification:

    • C60 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - General

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