期刊
EPL
卷 95, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1209/0295-5075/95/18001
关键词
-
资金
- DOE [DE-FG02-08ER46512]
- ONR [MURI N00014-09-1-1063]
We show that Coulomb drag in ultra-clean graphene double layers can be used for controlling the on-and-off ratio for current flow by tuning the external gate voltage. Hence, although graphene remains semi-metallic, the double-layer graphene system can be tuned from conductive to a highly resistive state. We show that our results explain previous data of Coulomb drag in double-layer graphene samples in disordered SiO2 substrates. Copyright (C) EPLA, 2011
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