Tuning field-induced energy gap of bilayer graphene via interlayer spacing

被引：93

作者：

Guo, Yufeng ^{[1
,2
,3
]}

Guo, Wanlin ^{[3
]}

Chen, Changfeng ^{[1
,2
]}

机构：

[1] Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA

[2] Univ Nevada, High Pressure Sci & Engn Ctr, Las Vegas, NV 89154 USA

[3] Nanjing Univ Aeronaut & Astronaut, Inst Nanosci, Nanjing 210016, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 24期

关键词：

D O I：

10.1063/1.2943414

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Our first-principles calculations reveal surprisingly high sensitivity of the field-induced energy gap of bilayer graphene to changes in its interlayer spacing. Small adjustments in the interlayer spacing near its equilibrium value produce large modulations in the gap over a wide range of field strength. We elucidate the mechanism for the extremely effective gap tuning by examining the interlayer charge redistribution driven by the coupled electric field and nanomechanical effect. (C) 2008 American Institute of Physics.

引用

页数：3

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