Quasimetallic behavior of carrier-polarized C60 molecular layers:: Experiment and theory -: art. no. 155440

被引:17
作者
Lu, ZH
Lo, CC
Huang, CJ
Yuan, YY
Dharma-wardana, MWC
Zgierski, MZ
机构
[1] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON M5S 3E4, Canada
[2] Natl Res Council Canada, Ottawa, ON K1A 0R6, Canada
关键词
D O I
10.1103/PhysRevB.72.155440
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Although C-60 is an insulator with a band gap E-g of similar to 2.5 eV, we show experimentally and theoretically that E-g is strongly affected by image forces and injected charges. In sharp contrast to the Coulomb blockade typical of quantum dots, E-g is reduced by Coulomb effects. The conductance of a micron-sized C-60 film sandwiched between metal (Al, Ag, Au, Mg, and Pt) contacts is investigated. Excellent Ohmic conductance holds for C-60 layers at room temperature, on using Al/LiF bilayer contacts. Arrhenius type activated conductivity with an activation gap of similar to 0.16 eV is found.
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页数:7
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共 34 条
  • [21] Molecular electronics, negative differential resistance, and resonant tunneling in a poled molecular layer on Al/LiF electrodes having a sharp density of states
    Lu, ZH
    Khangura, RS
    Dharma-wardana, MWC
    Zgierski, MZ
    Ritchie, D
    [J]. APPLIED PHYSICS LETTERS, 2004, 85 (02) : 323 - 325
  • [22] PHOTOEMISSION, AUTOIONIZATION, AND X-RAY-ABSORPTION SPECTROSCOPY OF ULTRATHIN-FILM C60 ON AU(110)
    MAXWELL, AJ
    BRUHWILER, PA
    NILSSON, A
    MARTENSSON, N
    RUDOLF, P
    [J]. PHYSICAL REVIEW B, 1994, 49 (15): : 10717 - 10725
  • [23] C-1S AUTOIONIZATION STUDY OF ELECTRON HOPPING RATES IN SOLID C-60 - COMMENT
    MEINDERS, MBJ
    TJENG, LH
    SAWATZKY, GA
    [J]. PHYSICAL REVIEW LETTERS, 1994, 73 (21) : 2937 - 2937
  • [24] WORK FUNCTION OF ELEMENTS AND ITS PERIODICITY
    MICHAELSON, HB
    [J]. JOURNAL OF APPLIED PHYSICS, 1977, 48 (11) : 4729 - 4733
  • [25] CHARGE-TRANSFER, DOPING, AND INTERFACE MORPHOLOGIES FOR AL-C-60
    OWENS, DW
    ALDAO, CM
    POIRIER, DM
    WEAVER, JH
    [J]. PHYSICAL REVIEW B, 1995, 51 (23): : 17068 - 17072
  • [26] Nanomechanical oscillations in a single-C60 transistor
    Park, H
    Park, J
    Lim, AKL
    Anderson, EH
    Alivisatos, AP
    McEuen, PL
    [J]. NATURE, 2000, 407 (6800) : 57 - 60
  • [27] The Kondo effect in the presence of ferromagnetism
    Pasupathy, AN
    Bialczak, RC
    Martinek, J
    Grose, JE
    Donev, LAK
    McEuen, PL
    Ralph, DC
    [J]. SCIENCE, 2004, 306 (5693) : 86 - 89
  • [28] The electronic structure of Ag(110)c(4x4)C-60 and Au(110)(6x5)C-60
    Purdie, D
    Bernhoff, H
    Reihl, B
    [J]. SURFACE SCIENCE, 1996, 364 (03) : 279 - 286
  • [29] Molecular electronics - Next-generation technology hits an early midlife crisis
    Service, RF
    [J]. SCIENCE, 2003, 302 (5645) : 556 - +
  • [30] Ab initio modeling of open systems:: Charge transfer, electron conduction, and molecular switching of a C60 device -: art. no. 121104
    Taylor, J
    Guo, H
    Wang, J
    [J]. PHYSICAL REVIEW B, 2001, 63 (12)