Current-voltage characteristics of graphene devices: Interplay between Zener-Klein tunneling and defects
We report a theoretical/experimental study of current-voltage characteristics (I-V) of graphene devices near the Dirac point. The I-V can be described by a power law ( I∝Vα with 1
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Veröffentlicht in: | Physical review. B 2010-07, Vol.82 (4), Article 045416 |
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container_title | Physical review. B |
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creator | Vandecasteele, Niels Barreiro, Amelia Lazzeri, Michele Bachtold, Adrian Mauri, Francesco |
description | We report a theoretical/experimental study of current-voltage characteristics (I-V) of graphene devices near the Dirac point. The I-V can be described by a power law ( I∝Vα with 1 |
doi_str_mv | 10.1103/PhysRevB.82.045416 |
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B</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Vandecasteele, Niels</au><au>Barreiro, Amelia</au><au>Lazzeri, Michele</au><au>Bachtold, Adrian</au><au>Mauri, Francesco</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Current-voltage characteristics of graphene devices: Interplay between Zener-Klein tunneling and defects</atitle><jtitle>Physical review. B</jtitle><date>2010-07-20</date><risdate>2010</risdate><volume>82</volume><issue>4</issue><artnum>045416</artnum><issn>1098-0121</issn><issn>2469-9950</issn><eissn>1550-235X</eissn><eissn>2469-9969</eissn><abstract>We report a theoretical/experimental study of current-voltage characteristics (I-V) of graphene devices near the Dirac point. The I-V can be described by a power law ( I∝Vα with 1<α≤1.5 ). The exponent is higher when the mobility is lower. This superlinear I-V is interpreted in terms of the interplay between Zener-Klein transport, that is tunneling between different energy bands, and defect scattering. Surprisingly, the Zener-Klein tunneling is made visible by the presence of defects.</abstract><pub>American Physical Society</pub><doi>10.1103/PhysRevB.82.045416</doi><oa>free_for_read</oa></addata></record> |
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title | Current-voltage characteristics of graphene devices: Interplay between Zener-Klein tunneling and defects |
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