One-dimensional plasmon in an atomic-scale metal wire

被引:100
作者
Nagao, Tadaaki
Yaginuma, Shin
Inaoka, Takeshi
Sakurai, Toshio
机构
[1] Natl Inst Mat Sci, Nano Syst Funct Ctr, Tsukuba, Ibaraki 3050044, Japan
[2] Iwate Univ, Dept Mat Sci & Engn, Morioka, Iwate 0208551, Japan
[3] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
关键词
D O I
10.1103/PhysRevLett.97.116802
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have measured one-dimensional (1D) plasmons in an atom wire array on the Si(557)-Au surface by inelastic scattering of a highly collimated slow electron beam. The angular dependence of the excitation energy clearly indicates the strong 1D confinement and free propagation of the plasma wave along the wire. The observed plasmon dispersion is explained very well by a quantum-mechanical scheme which takes into account dynamic exchange-correlation effects, interwire interactions, and spin-orbit splitting of the 1D bands. Although the qualitative feature of the plasmon dispersion is reminiscent of that of a high-density free-electron gas, we detected the substantial influence of electron correlation due to strong 1D confinement.
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页数:4
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共 17 条
  • [1] Metal-insulator transition in Au atomic chains on Si with two proximal bands
    Ahn, JR
    Yeom, HW
    Yoon, HS
    Lyo, IW
    [J]. PHYSICAL REVIEW LETTERS, 2003, 91 (19)
  • [2] Electronic structure of atomic chains on vicinal Si(111)-Au
    Altmann, KN
    Crain, JN
    Kirakosian, A
    Lin, JL
    Petrovykh, DY
    Himpsel, FJ
    Losio, R
    [J]. PHYSICAL REVIEW B, 2001, 64 (03)
  • [3] Chains of gold atoms with tailored electronic states
    Crain, JN
    McChesney, JL
    Zheng, F
    Gallagher, MC
    Snijders, PC
    Bissen, M
    Gundelach, C
    Erwin, SC
    Himpsel, FJ
    [J]. PHYSICAL REVIEW B, 2004, 69 (12)
  • [4] DIELECTRIC RESPONSE OF A ONE-DIMENSIONAL ELECTRON-GAS
    FRIESEN, WI
    BERGERSEN, B
    [J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1980, 13 (36): : 6627 - 6640
  • [5] Two-dimensional plasmon in a metallic monolayer on a semiconductor surface: Exchange-correlation effects
    Inaoka, T
    Nagao, T
    Hasegawa, S
    Hildebrandt, T
    Henzler, M
    [J]. PHYSICAL REVIEW B, 2002, 66 (24): : 1 - 8
  • [6] INAOKA T, IN PRESS
  • [7] Band splitting for Si(557)-Au: Is it spin-charge separation?
    Losio, R
    Altmann, KN
    Kirakosian, A
    Lin, JL
    Petrovykh, DY
    Himpsel, FJ
    [J]. PHYSICAL REVIEW LETTERS, 2001, 86 (20) : 4632 - 4635
  • [8] Two-dimensional plasmon in a surface-state band
    Nagao, T
    Hildebrandt, T
    Henzler, M
    Hasegawa, S
    [J]. SURFACE SCIENCE, 2001, 493 (1-3) : 680 - 686
  • [9] Dispersion and damping of a two-dimensional plasmon in a metallic surface-state band
    Nagao, T
    Hildebrandt, T
    Henzler, M
    Hasegawa, S
    [J]. PHYSICAL REVIEW LETTERS, 2001, 86 (25) : 5747 - 5750
  • [10] Nagao T, 2000, SURF INTERFACE ANAL, V30, P488, DOI 10.1002/1096-9918(200008)30:1<488::AID-SIA755>3.0.CO