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Nanophysics

Group “Statistical Mechanics and Condensed Matter”

The nanophysics team of the CPT studies quantum electronic transport in mesoscopic and nanoscopic systems of condensed matter. The reduced size of these systems, and the conditions of study (low temperature, dimensionnality, ...) guarantees that the quantum coherence is preserved, and lead to new behavior related to the fundamental properties of quantum physics.

Superconducting and hybrid systems are a first topic of research. In a superconductor, electrons form Cooper pairs, and coherent transport of Cooper pairs between two superconductors leads to Josephson current. We have studied the properties of Josephson current through a a magnetic molecule, a semi-conductor wih spin-orbit coupling, etc. We also study out-of-equilibrium supercondcuting and hybrid systems with several leads, where the two electrons of a Cooper pair can be spatially separated through cross Andreev reflection, providing a source of quantum entanglement.

A second topic of research is quantum Hall effect, where electronic transport is done through unidimensionnal edge states. The presence of electronic interactions leads to collective transport modes, where the effective charge is different from the electron charge. Statistics of the waiting time between electrons in these system is also a subject we are studying. Unidimensionnal transport can also be used to study electronic quantum optics, where the concepts of quantum optics are adapted to the case of individual electrons.

A third topic of research is quantum thermoelectricity, which is interesting both on a fundamental level and for applications. We have shown that the Seebeck coefficient can be strongly enhanced in the non-stationnary regime, and we have shown the strong link between thermoelectric efficiency and mixed correlators charge/heat. We continue the study of mixed correlators in several types of nanojunctions.

Directory of Members

Acciai Matteo PhD candidate
Email
Crépieux Adeline University faculty
+33.4.91.26.95.30 Email
Devillard Pierre University faculty
+33.4.91.26.95.23 Email
Jacquet Romain ATER
Email
Jonckheere Thibaut Researcher
+33.4.91.26.95.36 Email
Martin Thierry Director
University faculty
Correspondant LabEx OCEVU
Chef de l’équipe « Nanophysique »
Référent pôle de recherche interdisciplinaire et intersectoriel AMU - Sciences, technologies avancées
+33.4.91.26.95.41 Email
Raymond Laurent University faculty
+33.4.91.28.83.13 Email
Rech Jérôme Researcher
+33.4.91.26.95.34 Email
Ronetti Flavio PhD candidate
Email

List of Publications

54 results
Journal article
É. Thibierge, D. Ferraro, B. Roussel, C. Cabart, A. Marguerite, G. Fève, P. Degiovanni
Two-electron coherence and its measurement in electron quantum optics
Physical Review B : Condensed matter and materials physics, American Physical Society, 2016, 93 (8), pp.081302. 〈10.1103/PhysRevB.93.081302〉
Journal article
M. Albert, D. Chevallier, P. Devillard
Waiting times of entangled electrons in normal-superconducting junctions
Physica E: Low-dimensional Systems and Nanostructures, Elsevier, 2016, 76, pp.209-215. 〈10.1016/j.physe.2015.10.033〉
Journal article
Paul Eyméoud, Adeline Crépieux
Mixed electrical-heat noise spectrum in a quantum dot
Physical Review B : Condensed matter and materials physics, American Physical Society, 2016, 94 (20), pp.205416. 〈10.1103/PhysRevB.94.205416〉
Journal article
Redouane Zamoum, Mireille Lavagna, Adeline Crépieux
Finite-frequency noise in a non-interacting quantum dot
Journal of Statistical Mechanics: Theory and Experiment, IOP Publishing, 2016, Special Issue on Unsolved Problems of Noise in Physics, Biology and Technology, pp.054013. 〈10.1088/1742-5468/2016/05/054013〉
Journal article
R. Jacquet, J. Rech, T. Jonckheere, A. Zazunov, T. Martin
Cooper pair splitting and recombination in a nanoSQUID geometry at high transparency
Physical Review B : Condensed matter and materials physics, American Physical Society, 2015, 92 (23), pp.235429. 〈10.1103/PhysRevB.92.235429〉
Journal article
Dario Ferraro, J. Rech, T. Jonckheere, T. Martin
Nonlocal interference and Hong-Ou-Mandel collisions of single Bogoliubov quasiparticles
Physical Review B : Condensed matter and materials physics, American Physical Society, 2015, 91, pp.075406. 〈http://journals.aps.org/prb/pdf/10.1103/PhysRevB.91.075406〉. 〈10.1103/PhysRevB.91.075406〉
Conference paper
F. Michelini, A. Crépieux, F. Gibelli, J.-F. Guillemoles, N. Cavassilas, R. Whitney
How does energy filtering improve quantum-dot based photovoltaic devices
Photovoltaic Specialist Conference, 2015, New Orleans, France. 2015, Photovoltaic Specialist Conference (PVSC), 2015 IEEE 42nd 〈10.1109/PVSC.2015.7355807〉
Journal article
Adeline Crépieux, Paul Eyméoud, Fabienne Michelini
Correlations between charge and heat currents in an interacting quantum dot
Journal of Physics: Conference Series, IOP Publishing, 2015, J. Phys.: Conf. Ser. 592, pp.012140. 〈10.1088/1742-6596/592/1/012140〉
Journal article
Adeline Crépieux, Fabienne Michelini
Mixed, charge and heat noises in thermoelectric nanosystems
Journal of Physics: Condensed Matter, IOP Publishing, 2014, 27, pp.015302. 〈10.1088/0953-8984/27/1/015302〉
Journal article
Jérôme Rech, T Jonckheere, Thierry Martin, Benoît Douçot, D Feinberg, R Mélin
A Proposal for the observation of nonlocal multipair production: the biSQUID
Physical Review B : Condensed matter and materials physics, American Physical Society, 2014, 90 (7), pp.075419. 〈http://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.075419〉. 〈10.1103/PhysRevB.90.075419〉
54 results

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