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(26) Production(s) de CHENAUD B.
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Acoustic phonon-assisted resonant tunneling via single impurities 
Auteur(s): Gryglas M., Baj M., Chenaud B., Jouault B., Cavanna A., Faini G.
(Article) Publié:
Physical Review B, vol. 69 p.165302 (2004)
Texte intégral en Openaccess : 
Ref HAL: hal-00544445_v1
DOI: 10.1103/PhysRevB.69.165302
WoS: 000221427100053
Exporter : BibTex | endNote
22 Citations
Résumé: We perform the investigations of the resonant tunneling via impurities embedded in the AlAs barrier of a single GaAs/AlGaAs heterostructure. In the I(V) characteristics measured at 30 mK, the contribution of individual donors is resolved and the fingerprints of phonon assistance in the tunneling process are seen. The latter is confirmed by detailed analysis of the tunneling rates and the modeling of the resonant tunneling contribution to the current. Moreover, fluctuations of the local structure of the DOS (LDOS) and Fermi edge singularities are observed.
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2DEG spectroscopy with resonant tunneling through single impurity state
Auteur(s): Gryglas Marta, Baj M., Jouault B., Raymond A., Chaubet C., Chenaud B., Robert Jean-louis, Faini G.
Conference: 11th International Symposium on Nanostructures - Physics and Technology (St Petersburg (RUSSIA), FR, 2003-06-23)
Actes de conférence: International Journal of Nanoscience, Vol 2, No 6, vol. 2 p.585-592 (2003)
Ref HAL: hal-00545080_v1
Exporter : BibTex | endNote
Résumé: We have used silicon impurities in an aluminum arsenide barrier to probe an adjacent two-dimensional electron gas (2DEG). A single impurity acts as a local spectrometer and scans the local density of states of the 2DEG. Magnetotransport experiments have been performed at low temperature with a magnetic field B applied along the direction of the current. Current-voltage characteristics strongly depend on B and reveal the formation of Landau levels (LLs).
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Are aharonov-bohm effect and quantized hall regime compatible?
Auteur(s): Chenaud B., Chaubet C., Jouault B., Saminadayar L., Mailly D., Faini G., Cavanna A.
Conference: 11th International Symposium on Nanostructures - Physics and Technology (St Petersburg (RUSSIA), FR, 2003-06-23)
Actes de conférence: International Journal of Nanoscience, Vol 2, No 6, vol. 2 p.535-541 (2003)
Ref HAL: hal-00544479_v1
Exporter : BibTex | endNote
Résumé: We present calculations of the quantum oscillations appearing in the transmission of a mesoscopic GaAs/GaAlAs ring isolated by quantum point contacts. We show that the device acts as an electronic Fabry-Perot spectrometer in the quantum Hall effect regime, and discuss the effect of the coherence length of edge states.
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2DEG spectroscopy with resonant tunneling through single impurity state
Auteur(s): Cryglas M., Baj M., Jouault B., Raymond A., Chaubet C., Chenaud B., Robert J. L., Faini G.
Conference: International Journal of Nanoscience, Vol 2, No 6 (PO BOX 128 FARRER RD, SINGAPORE 9128, SG, 2003-07-24)
Ref HAL: hal-03037692_v1
Exporter : BibTex | endNote
Résumé: We have used silicon impurities in an aluminum arsenide barrier to probe an adjacent two-dimensional electron gas (2DEG). A single impurity acts as a local spectrometer and scans the local density of states of the 2DEG. Magnetotransport experiments have been performed at low temperature with a magnetic field B applied along the direction of the current. Current-voltage characteristics strongly depend on B and reveal the formation of Landau levels (LLs).
Commentaires: 11th International Symposium on Nanostructures - Physics and Technology, St Petersburg, RUSSIA, JUN 23-28, 2003
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Are aharonov-bohm effect and quantized hall regime compatible?
Auteur(s): Chenaud B., Chaubet C., Jouault B., Saminadayar L., Mailly D., Faini G., Cavanna A.
(Article) Publié:
International Journal Of Nanoscience, vol. 2 p.535-541 (2003)
Ref HAL: hal-03037548_v1
DOI: 10.1142/S0219581X03001656
Exporter : BibTex | endNote
Résumé: We present calculations of the quantum oscillations appearing in the transmission of a mesoscopic GaAs/GaAlAs ring isolated by quantum point contacts. We show that the device acts as an electronic Fabry-Perot spectrometer in the quantum Hall effect regime, and discuss the effect of the coherence length of edge states.
Commentaires: 11th International Symposium on Nanostructures - Physics and Technology, St Petersburg, RUSSIA, JUN 23-28, 2003
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