Tunable Superconducting Phase Transition in Metal-Decorated Graphene Sheets

被引：61

作者：

Kessler, B. M. ^{[1
,2
]}

Girit, C. Oe. ^{[1
,2
]}

Zettl, A. ^{[1
,2
,3
]}

Bouchiat, V. ^{[1
,4
]}

机构：

[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[3] Ctr Integrated Nanomech Syst, Berkeley, CA 94720 USA

[4] CNRS, Inst Neel, F-38042 Grenoble, France

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 04期

关键词：

2-DIMENSIONAL SYSTEMS; INSULATOR TRANSITION; DEVICES;

D O I：

10.1103/PhysRevLett.104.047001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have produced graphene sheets decorated with a nonpercolating network of nanoscale tin clusters. These metal clusters both efficiently dope the graphene substrate and induce long-range superconducting correlations. We find that despite structural inhomogeneity on mesoscopic length scales (10-100 nm), this material behaves electronically as a homogenous dirty superconductor with a field-effect tuned Berezinskii-Kosterlitz-Thouless transition. Our facile self-assembly method establishes graphene as an ideal tunable substrate for studying induced two-dimensional electronic systems at fixed disorder and our technique can readily be extended to other order parameters such as magnetism.

引用

页数：4

共 43 条

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