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Título: | Current-voltage characteristics of graphene devices: Interplay between Zener-Klein tunneling and defects |
Autor: | Barreiro, Amelia CSIC; Bachtold, Adrian CSIC ORCID; Mauri, Francesco | Fecha de publicación: | 2010 | Editor: | American Physical Society | Citación: | Physical Review B 82(4): 045416 (2010) | Resumen: | 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. | Descripción: | 10 páginas, 12 figuras.-- PACS number(s): 72.80.Rj, 72.10.Fk, 73.50.Dn, 73.61.Wp.-- et al. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevB.82.045416 | URI: | http://hdl.handle.net/10261/44538 | DOI: | 10.1103/PhysRevB.82.045416 | ISSN: | 1098-0121 | E-ISSN: | 1550-235X |
Aparece en las colecciones: | (CIN2) Artículos |
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e045416.pdf | 437,52 kB | Adobe PDF | Visualizar/Abrir |
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