| Issue |
Europhys. Lett.
Volume 57, Number 5, March 2002
|
|
|---|---|---|
| Page(s) | 711 - 716 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2002-00521-4 | |
| Published online | 01 September 2002 | |
Quantum transport in one-dimensional monomode waveguides
1
Faculty of Engineering, Zagazig University, Benha Branch -
Cairo, Egypt
2
Laboratoire de Dynamique et
Structures des Matériaux Moléculaires, ESA CNRS 8024
UFR de Physique, Université de Lille 1 - 59655 Villeneuve d'Ascq Cédex,
France
3
Département de Physique, Faculté des
Sciences, Université Moulay Ismail Meknès, Morocco
Corresponding author: abdellatif.akjouj@univ-lille1.fr
Received:
3
September
2001
Accepted:
5
December
2001
The electronic transmission through a one-dimensional (1D) monomode wave guide made of asymmetric loops pasted together with segments of finite length is investigated. Existence of gaps (where the propagation of electrons is forbidden) in the band structure is reported. These gaps originate both from the periodicity of the system and the resonance states of the loops. The width of these band gaps depends on the geometrical parameters of the structure and may be drastically increased in a tandem geometry made of several successive asymmetric serial loops structures (ASLSs) which differ by their geometrical characteristics. These ASLSs may have potential applications as ultra-wide-band filters.
PACS: 73.21.-b – Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems / 73.23.Ps – Electronic transport in mesoscopic systems / 73.20.At – Surface states, band structure, electron density of states
© EDP Sciences, 2002
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