期刊
PHYSICAL REVIEW LETTERS
卷 102, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.026807
关键词
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资金
- Office of Naval Research [N00014-02-1-0986]
- National Science Foundation [ECS-9731293]
- Air Force [FA9550-04-1-0384, F49620-03-1-0256]
Transport through potential barriers in graphene is investigated using a set of metallic gates capacitively coupled to graphene to modulate the potential landscape. When a gate-induced potential step is steep enough, disorder becomes less important and the resistance across the step is in quantitative agreement with predictions of Klein tunneling of Dirac fermions up to a small correction. We also perform magnetoresistance measurements at low magnetic fields and compare them to recent predictions.
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