Tunable graphene single electron transistor

被引：328

作者：

Stampfer, C. ^{[1
]}

Schurtenberger, E. ^{[1
]}

Molitor, F. ^{[1
]}

Guettinger, J. ^{[1
]}

Ihn, T. ^{[1
]}

Ensslin, K. ^{[1
]}

机构：

[1] ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland

来源：

NANO LETTERS | 2008年 / 8卷 / 08期

基金：

瑞士国家科学基金会;

关键词：

D O I：

10.1021/nl801225h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report electronic transport experiments on a graphene single electron transistor. The device consists of a graphene island connected to source and drain electrodes via two narrow graphene constrictions. It is electrostatically tunable by three lateral graphene gates and an additional back gate. The tunneling coupling is a strongly nonmonotonic function of gate voltage indicating the presence of localized states in the barriers. We investigate energy scales for the tunneling gap, the resonances in the constrictions, and for the Coulomb blockade resonances. From Coulomb diamond measurements in different device configurations (i.e., barrier configurations) we extract a charging energy of approximate to 3.4 meV and estimate a characteristic energy scale for the constriction resonances of approximate to 10.meV.

引用

页码：2378 / 2383

页数：6

共 25 条

[1] The electronic properties of graphene [J].

Castro Neto, A. H. ;

Guinea, F. ;

Peres, N. M. R. ;

Novoselov, K. S. ;

Geim, A. K. .

REVIEWS OF MODERN PHYSICS, 2009, 81 (01) :109-162

[2] Graphene nano-ribbon electronics [J].

Chen, Zhihong ;

Lin, Yu-Ming ;

Rooks, Michael J. ;

Avouris, Phaedon .

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2007, 40 (02) :228-232

[3] Seventy years of the Klein paradox [J].

Dombey, N ;

Calogeracos, A .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1999, 315 (1-3) :41-58

[4] Raman spectrum of graphene and graphene layers [J].

Ferrari, A. C. ;

Meyer, J. C. ;

Scardaci, V. ;

Casiraghi, C. ;

Lazzeri, M. ;

Mauri, F. ;

Piscanec, S. ;

Jiang, D. ;

Novoselov, K. S. ;

Roth, S. ;

Geim, A. K. .

PHYSICAL REVIEW LETTERS, 2006, 97 (18)

[5] Non-Gaussian distribution of nearest-neighbour Coulomb peak spacings in metallic single-electron transistors [J].

Furlan, M ;

Heinzel, T ;

Jeanneret, B ;

Lotkhov, SV ;

Ensslin, K .

EUROPHYSICS LETTERS, 2000, 49 (03) :369-375

[6] The rise of graphene [J].

Geim, A. K. ;

Novoselov, K. S. .

NATURE MATERIALS, 2007, 6 (03) :183-191

[7] Spatially resolved raman spectroscopy of single- and few-layer graphene [J].

Graf, D. ;

Molitor, F. ;

Ensslin, K. ;

Stampfer, C. ;

Jungen, A. ;

Hierold, C. ;

Wirtz, L. .

NANO LETTERS, 2007, 7 (02) :238-242

[8] Energy band-gap engineering of graphene nanoribbons [J].

Han, Melinda Y. ;

Oezyilmaz, Barbaros ;

Zhang, Yuanbo ;

Kim, Philip .

PHYSICAL REVIEW LETTERS, 2007, 98 (20)

[9] Siticon device scaling to the sub-10-nm regime [J].

Leong, M ;

Doris, B ;

Kedzierski, J ;

Rim, K ;

Yang, M .

SCIENCE, 2004, 306 (5704) :2057-2060

[10]

Ihn T, 2004, SPRINGER TRAC MOD PH, V192, P3

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