Imaging and controlling electron transport ...
Document type :
Compte-rendu et recension critique d'ouvrage
DOI :
Title :
Imaging and controlling electron transport inside a quantum ring
Author(s) :
Hackens, B. [Auteur]
Laboratoire de Spectrométrie Physique [LSP]
Dispositifs Intégrés et Circuits Electroniques Machine Learning Group [DICE - MLG]
Martins, F. [Auteur]
Laboratoire de Spectrométrie Physique [LSP]
Ouisse, T. [Auteur]
Laboratoire de Spectrométrie Physique [LSP]
Sellier, H. [Auteur]
Laboratoire de Spectrométrie Physique [LSP]
Bollaert, Sylvain [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Wallart, Xavier [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Cappy, Alain [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Chevrier, Joël [Auteur]
Laboratoire d'Etudes des Propriétés Electroniques des Solides [LEPES]
Bayot, V. [Auteur]
Dispositifs Intégrés et Circuits Electroniques Machine Learning Group [DICE - MLG]
Huant, S. [Auteur]
Laboratoire de Spectrométrie Physique [LSP]
Laboratoire de Spectrométrie Physique [LSP]
Dispositifs Intégrés et Circuits Electroniques Machine Learning Group [DICE - MLG]
Martins, F. [Auteur]
Laboratoire de Spectrométrie Physique [LSP]
Ouisse, T. [Auteur]
Laboratoire de Spectrométrie Physique [LSP]
Sellier, H. [Auteur]
Laboratoire de Spectrométrie Physique [LSP]
Bollaert, Sylvain [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Wallart, Xavier [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Cappy, Alain [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Chevrier, Joël [Auteur]
Laboratoire d'Etudes des Propriétés Electroniques des Solides [LEPES]
Bayot, V. [Auteur]
Dispositifs Intégrés et Circuits Electroniques Machine Learning Group [DICE - MLG]
Huant, S. [Auteur]
Laboratoire de Spectrométrie Physique [LSP]
Journal title :
Nature Physics
Pages :
826
Publisher :
Nature Publishing Group
Publication date :
2006-11-14
ISSN :
1745-2473
HAL domain(s) :
Physique [physics]/Matière Condensée [cond-mat]/Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]
English abstract : [en]
Traditionally, the understanding of quantum transport, coherent and ballistic, relies on the measurement of macroscopic properties such as the conductance. While powerful when coupled to statistical theories, this approach ...
Show more >Traditionally, the understanding of quantum transport, coherent and ballistic, relies on the measurement of macroscopic properties such as the conductance. While powerful when coupled to statistical theories, this approach cannot provide a detailed image of "how electrons behave down there". Ideally, understanding transport at the nanoscale would require tracking each electron inside the nano-device. Significant progress towards this goal was obtained by combining Scanning Probe Microscopy (SPM) with transport measurements. Some studies even showed signatures of quantum transport in the surrounding of nanostructures. Here, SPM is used to probe electron propagation inside an open quantum ring exhibiting the archetype of electron wave interference phenomena: the Aharonov-Bohm effect. Conductance maps recorded while scanning the biased tip of a cryogenic atomic force microscope above the quantum ring show that the propagation of electrons, both coherent and ballistic, can be investigated in situ, and even be controlled by tuning the tip potential.Show less >
Show more >Traditionally, the understanding of quantum transport, coherent and ballistic, relies on the measurement of macroscopic properties such as the conductance. While powerful when coupled to statistical theories, this approach cannot provide a detailed image of "how electrons behave down there". Ideally, understanding transport at the nanoscale would require tracking each electron inside the nano-device. Significant progress towards this goal was obtained by combining Scanning Probe Microscopy (SPM) with transport measurements. Some studies even showed signatures of quantum transport in the surrounding of nanostructures. Here, SPM is used to probe electron propagation inside an open quantum ring exhibiting the archetype of electron wave interference phenomena: the Aharonov-Bohm effect. Conductance maps recorded while scanning the biased tip of a cryogenic atomic force microscope above the quantum ring show that the propagation of electrons, both coherent and ballistic, can be investigated in situ, and even be controlled by tuning the tip potential.Show less >
Language :
Anglais
Popular science :
Non
Comment :
11 text pages + 3 figures
Source :
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