Local Gating of an Ir(111) Surface Resonance by Graphene Islands

被引：40
作者：
Altenburg, S. J. [1 ]
Kroeger, J. [2 ]
Wehling, T. O. [3 ]
Sachs, B. [3 ]
Lichtenstein, A. I. [3 ]
Berndt, R. [1 ]
机构：
[1] Univ Kiel, Inst Expt & Angew Phys, D-24098 Kiel, Germany
[2] Tech Univ Ilmenau, Inst Phys, D-98693 Ilmenau, Germany
[3] Univ Hamburg, Inst Theoret Phys 1, D-20355 Hamburg, Germany
来源：
PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 20期
关键词：
SCANNING TUNNELING MICROSCOPE; AUGMENTED-WAVE METHOD; ULTRASOFT PSEUDOPOTENTIALS; METAL-SURFACES; SPECTROSCOPY; DISPERSIONS; STATES;
D O I：
10.1103/PhysRevLett.108.206805
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The influence of graphene islands on the electronic structure of the Ir(111) surface is investigated. Scanning tunneling spectroscopy (STS) indicates the presence of a two-dimensional electron gas with a binding energy of -160 meV and an effective mass of -0.18m(e) underneath single-layer graphene on the Ir(111) surface. Density functional calculations reveal that the STS features are predominantly due to a holelike surface resonance of the Ir(111) substrate. Nanometer-sized graphene islands act as local gates, which shift and confine the surface resonance.
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页数：5
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共 29 条
  • [1] Graphene on Ru(0001): Contact Formation and Chemical Reactivity on the Atomic Scale
    Altenburg, S. J.
    Kroeger, J.
    Wang, B.
    Bocquet, M. -L.
    Lorente, N.
    Berndt, R.
    [J]. PHYSICAL REVIEW LETTERS, 2010, 105 (23)
  • [2] REAL-SPACE IMAGING OF ELECTRON-SCATTERING PHENOMENA AT METAL-SURFACES
    AVOURIS, P
    LYO, IW
    WALKUP, RE
    HASEGAWA, Y
    [J]. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1994, 12 (03): : 1447 - 1455
  • [3] PROJECTOR AUGMENTED-WAVE METHOD
    BLOCHL, PE
    [J]. PHYSICAL REVIEW B, 1994, 50 (24): : 17953 - 17979
  • [4] Graphene on Ir(111): Physisorption with Chemical Modulation
    Busse, Carsten
    Lazic, Predrag
    Djemour, Rabie
    Coraux, Johann
    Gerber, Timm
    Atodiresei, Nicolae
    Caciuc, Vasile
    Brako, Radovan
    N'Diaye, Alpha T.
    Bluegel, Stefan
    Zegenhagen, Joerg
    Michely, Thomas
    [J]. PHYSICAL REVIEW LETTERS, 2011, 107 (03)
  • [5] Resonator design for use in scanning tunneling spectroscopy studies of surface electron lifetimes -: art. no. 035443
    Crampin, S
    Jensen, H
    Kröger, J
    Limot, L
    Berndt, R
    [J]. PHYSICAL REVIEW B, 2005, 72 (03):
  • [6] IMAGING STANDING WAVES IN A 2-DIMENSIONAL ELECTRON-GAS
    CROMMIE, MF
    LUTZ, CP
    EIGLER, DM
    [J]. NATURE, 1993, 363 (6429) : 524 - 527
  • [7] THEORY OF THE LOCAL DENSITY OF SURFACE-STATES ON A METAL - COMPARISON WITH SCANNING TUNNELING SPECTROSCOPY OF A AU(111) SURFACE
    DAVIS, LC
    EVERSON, MP
    JAKLEVIC, RC
    SHEN, WD
    [J]. PHYSICAL REVIEW B, 1991, 43 (05): : 3821 - 3830
  • [8] Multiscale magnetic study of Ni(111) and graphene on Ni(111)
    Dzemiantsova, L. V.
    Karolak, M.
    Lofink, F.
    Kubetzka, A.
    Sachs, B.
    von Bergmann, K.
    Hankemeier, S.
    Wehling, T. O.
    Froemter, R.
    Oepen, H. P.
    Lichtenstein, A. I.
    Wiesendanger, R.
    [J]. PHYSICAL REVIEW B, 2011, 84 (20)
  • [9] TUNNELING SPECTROSCOPY OF THE SI(111)2X1 SURFACE
    FEENSTRA, RM
    STROSCIO, JA
    FEIN, AP
    [J]. SURFACE SCIENCE, 1987, 181 (1-2) : 295 - 306
  • [10] Inhomogeneous electronic properties of monolayer graphene on Ru(0001)
    Gyamfi, M.
    Eelbo, T.
    Wasniowska, M.
    Wiesendanger, R.
    [J]. PHYSICAL REVIEW B, 2011, 83 (15)
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