Contact dependence of carrier injection in carbon nanotubes: An ab initio study (TT 9.7 Mon 15:30 HSZ 304)


Deutsche Physikalische Gesellschaft, AKF Frühjahrstagung 2006 <br> German Physical Society, Spring Meeting 2006 | event contribution
Link to conference: http://dresden06.dpg-tagungen.de/
March 27, 2006 - March 31, 2006 | Dresden, Germany

We combine ab initio density functional theory with transport calculations to provide a microscopic basis for distinguishing between `good' and `poor' metal contacts to nanotubes. Comparing Ti and Pd as examples of different contact metals, we trace back the observed superiority of Pd to the nature of the metal-nanotube hybridization. Based on large scale Landauer transport calculations, we suggest that the `optimum' metalnanotube contact combines a weak hybridization with a large contact length between the metal and the nanotube.


Authors

Contact dependence of carrier injection in carbon nanotubes: An ab initio study (TT 9.7 Mon 15:30 HSZ 304)


Deutsche Physikalische Gesellschaft, AKF Frühjahrstagung 2006 <br> German Physical Society, Spring Meeting 2006 | event contribution
Link to conference: http://dresden06.dpg-tagungen.de/
March 27, 2006 - March 31, 2006 | Dresden, Germany

We combine ab initio density functional theory with transport calculations to provide a microscopic basis for distinguishing between `good' and `poor' metal contacts to nanotubes. Comparing Ti and Pd as examples of different contact metals, we trace back the observed superiority of Pd to the nature of the metal-nanotube hybridization. Based on large scale Landauer transport calculations, we suggest that the `optimum' metalnanotube contact combines a weak hybridization with a large contact length between the metal and the nanotube.


Authors