Shot noise in graphene

被引:121
作者
DiCarlo, L. [1 ]
Williams, J. R. [2 ]
Zhang, Yiming [1 ]
McClure, D. T. [1 ]
Marcus, C. M. [1 ]
机构
[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
[2] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA
关键词
D O I
10.1103/PhysRevLett.100.156801
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report measurements of current noise in single-layer and multilayer graphene devices. In four single-layer devices, including a p-n junction, the Fano factor remains constant to within +/- 10% upon varying carrier type and density, and averages between 0.35 and 0.38. The Fano factor in a multilayer device is found to decrease from a maximal value of 0.33 at the charge-neutrality point to 0.25 at high carrier density. These results are compared to theories for shot noise in ballistic and disordered graphene.
引用
收藏
页数:4
相关论文
共 27 条
  • [1] SUPPRESSION OF SHOT NOISE IN METALLIC DIFFUSIVE CONDUCTORS
    BEENAKKER, CWJ
    BUTTIKER, M
    [J]. PHYSICAL REVIEW B, 1992, 46 (03): : 1889 - 1892
  • [2] Shot noise in mesoscopic conductors
    Blanter, YM
    Büttiker, M
    [J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2000, 336 (1-2): : 1 - 166
  • [3] SCATTERING-THEORY OF CURRENT AND INTENSITY NOISE CORRELATIONS IN CONDUCTORS AND WAVE GUIDES
    BUTTIKER, M
    [J]. PHYSICAL REVIEW B, 1992, 46 (19): : 12485 - 12507
  • [4] CASTRO AH, IN PRESS REV MOD PHY
  • [5] Selective transmission of Dirac electrons and ballistic magnetoresistance of n-p junctions in graphene
    Cheianov, Vadim V.
    Fal'ko, Vladimir I.
    [J]. PHYSICAL REVIEW B, 2006, 74 (04):
  • [6] MESOSCOPIC FLUCTUATIONS IN THE SHOT-NOISE POWER OF METALS
    DEJONG, MJM
    BEENAKKER, CWJ
    [J]. PHYSICAL REVIEW B, 1992, 46 (20) : 13400 - 13406
  • [7] System for measuring auto- and cross correlation of current noise at low temperatures
    DiCarlo, L.
    Zhang, Y.
    McClure, D. T.
    Marcus, C. M.
    Pfeiffer, L. N.
    West, K. W.
    [J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2006, 77 (07)
  • [8] The rise of graphene
    Geim, A. K.
    Novoselov, K. S.
    [J]. NATURE MATERIALS, 2007, 6 (03) : 183 - 191
  • [9] Phase-coherent transport measured in a side-gated mesoscopic graphite wire
    Graf, D.
    Molitor, F.
    Ihn, T.
    Ensslin, K.
    [J]. PHYSICAL REVIEW B, 2007, 75 (24)
  • [10] 1/3-shot-noise suppression in diffusive nanowires
    Henny, M
    Oberholzer, S
    Strunk, C
    Schönenberger, C
    [J]. PHYSICAL REVIEW B, 1999, 59 (04): : 2871 - 2880