Ballistic quantum transport in nano devices and circuits
Ohm's law, a linear current-voltage pattern, has been and continues to be the basis for characterizing, evaluating performance, and designing integrated circuits, but is shown not to hold its supremacy as channel lengths are being scaled down. In a nanoscale circuit with reduced dimensionality...
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| Format: | Book Section |
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IEEE
2008
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| _version_ | 1796855090221416448 |
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| author | Arora, Vijay Kumar |
| author_facet | Arora, Vijay Kumar |
| author_sort | Arora, Vijay Kumar |
| collection | ePrints |
| description | Ohm's law, a linear current-voltage pattern, has been and continues to be the basis for characterizing, evaluating performance, and designing integrated circuits, but is shown not to hold its supremacy as channel lengths are being scaled down. In a nanoscale circuit with reduced dimensionality in one or more of the three Cartesian directions, quantum effects transform the carrier statistics. In the high electric field, the collision free ballistic transform is predicted, while in low electric field the transport remains predominantly scattering-limited. In a muro/nano-circuit, even a low logic voltage of 1 V is above the critical voltage Vc (V>>Vc) triggering nonohmic behavior that results in ballistic current saturation. The saturation current is now controlled by ballistic (B) saturation velocity that is comparable to an appropriate thermal velocity for a nondegenerate and Fermi velocity for a degenerate system with given dimensionality. A quantum emission may lower this ballistic velocity. A review of the physics behind breakdown of Ohm's law and existence of quantum effects in engineering low-dimensional nanoelectronic devices is given. |
| first_indexed | 2024-03-05T18:23:31Z |
| format | Book Section |
| id | utm.eprints-12507 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T18:23:31Z |
| publishDate | 2008 |
| publisher | IEEE |
| record_format | dspace |
| spelling | utm.eprints-125072017-10-02T08:01:21Z http://eprints.utm.my/12507/ Ballistic quantum transport in nano devices and circuits Arora, Vijay Kumar TK Electrical engineering. Electronics Nuclear engineering Ohm's law, a linear current-voltage pattern, has been and continues to be the basis for characterizing, evaluating performance, and designing integrated circuits, but is shown not to hold its supremacy as channel lengths are being scaled down. In a nanoscale circuit with reduced dimensionality in one or more of the three Cartesian directions, quantum effects transform the carrier statistics. In the high electric field, the collision free ballistic transform is predicted, while in low electric field the transport remains predominantly scattering-limited. In a muro/nano-circuit, even a low logic voltage of 1 V is above the critical voltage Vc (V>>Vc) triggering nonohmic behavior that results in ballistic current saturation. The saturation current is now controlled by ballistic (B) saturation velocity that is comparable to an appropriate thermal velocity for a nondegenerate and Fermi velocity for a degenerate system with given dimensionality. A quantum emission may lower this ballistic velocity. A review of the physics behind breakdown of Ohm's law and existence of quantum effects in engineering low-dimensional nanoelectronic devices is given. IEEE 2008 Book Section PeerReviewed Arora, Vijay Kumar (2008) Ballistic quantum transport in nano devices and circuits. In: 2008 2nd IEEE International Nanoelectronics Conference, INEC 2008. IEEE, New York, 573-578 . ISBN 978-142441573-1 http://dx.doi.org/10.1109/INEC.2008.4585553 DOI:10.1109/INEC.2008.4585553 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Arora, Vijay Kumar Ballistic quantum transport in nano devices and circuits |
| title | Ballistic quantum transport in nano devices and circuits |
| title_full | Ballistic quantum transport in nano devices and circuits |
| title_fullStr | Ballistic quantum transport in nano devices and circuits |
| title_full_unstemmed | Ballistic quantum transport in nano devices and circuits |
| title_short | Ballistic quantum transport in nano devices and circuits |
| title_sort | ballistic quantum transport in nano devices and circuits |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| work_keys_str_mv | AT aroravijaykumar ballisticquantumtransportinnanodevicesandcircuits |