Large-scale Mesoscopic Transport in Nanostructured Graphene

被引：29

作者：

Zhang, Haijing ^{[1
,2
]}

Lu, Jianming ^{[1
,2
]}

Shi, Wu ^{[1
,2
]}

Wang, Zhe ^{[1
,2
]}

Zhang, Ting ^{[1
,2
]}

Sun, Mingyuan ^{[1
,2
]}

Zheng, Yuan ^{[1
,2
]}

Chen, Qihong ^{[1
,2
]}

Wang, Ning ^{[1
,2
]}

Lin, Juhn-Jong ^{[4
,5
]}

Sheng, Ping ^{[1
,2
,3
]}

机构：

[1] HKUST, Dept Phys, Kowloon, Hong Kong, Peoples R China

[2] HKUST, William Mong Inst Nano Sci & Technol, Kowloon, Hong Kong, Peoples R China

[3] Hong Kong Univ Sci & Technol, Inst Adv Study, Kowloon, Hong Kong, Peoples R China

[4] Natl Chiao Tung Univ, Inst Phys, Hsinchu 30010, Taiwan

[5] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 30010, Taiwan

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 06期

关键词：

LOCALIZATION; DIFFUSION; ABSENCE; METAL;

D O I：

10.1103/PhysRevLett.110.066805

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Through exponential sample-size scaling of conductance, we demonstrate strong electron localization in three sets of nanostructured antidot graphene samples with localization lengths of 1.1, 2, and 3.4 mu m. The large-scale mesoscopic transport is manifest as a parallel conduction channel to 2D variable range hopping, with a Coulomb quasigap around the Fermi level. The opening of the correlation quasigap, observable below 25 K through the temperature dependence of conductance, makes possible the exponential suppression of inelastic electron-electron scatterings and thereby leads to an observed dephasing length of 10 mu m. DOI: 10.1103/PhysRevLett.110.066805

引用

页数：5

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