Fuse, T and Kawano, Y and Yamaguchi, T and Aoyagi, Y and Ishibashi, K (2007) Quantum response of carbon nanotube quantum dots to terahertz wave irradiation. Nanotechnology, 18 (4). 044001-044005. ISSN 09574484
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Official URL: http://dx.doi.org/10.1088/0957-4484/18/4/044001
Single-electron transport measurements have been carried out at 1.5 K on single-wall carbon nanotube (SWCNT) quantum dots (QDs) under terahertz (THz) irradiation with a frequency of 2.5 THz. The most important finding in this study was new side-peaks that appeared only under the THz irradiation. From the detailed analysis with energy scales associated with the QDs, we conclude that the side-peaks originate from the photon-assisted tunnelling (PAT) of an electron in the QD to the drain electrode. The present THz-PAT is the first observation in QDs because of the larger energy scales in a SWCNT QD, compared with those of standard semiconductor QDs.
|Subjects:||Physical Science > Nanoelectronics|
Physical Science > Quantum phenomena
|Deposited By:||Lesley Tobin|
|Deposited On:||17 Nov 2008 15:13|
|Last Modified:||30 Jan 2009 15:56|
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