Centre de Physique Théorique

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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
Crépieux Adeline University faculty
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Devillard Pierre University faculty
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Gremaud Benoît Researcher
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Jonckheere Thibaut Researcher
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Martin Thierry Director
University faculty
Correspondant LabEx OCEVU
Chef de l’équipe « Nanophysique »
Référent pôle de recherche interdisciplinaire et intersectoriel AMU - Sciences, technologies avancées
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Raymond Laurent University faculty
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Rech Jérôme Researcher
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List of Publications

69 results
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. ⟨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⟩
Journal article
Mathias Albert, Pierre Devillard
Waiting time distribution for trains of quantized electron pulses
Physical Review B : Condensed matter and materials physics, American Physical Society, 2014, 90 (3), pp.10. ⟨10.1103/PhysRevB.90.035431⟩
Journal article
Régis Mélin, Denis Feinberg, Hervé Courtois, Ciprian Padurariu, Andreas Pfeffer, Jean Eudes Duvauchelle, Francois Lefloch, Thibaut Jonckheere, Jérôme Rech, Thierry Martin, Benoît Douçot
D.C. Josephson transport by quartets and other Andreev resonances in superconducting bijunctions
Journal of Physics: Conference Series, IOP Publishing, 2014, 568 (5), pp.052006. ⟨10.1088/1742-6596/568/5/052006⟩
Journal article
R Zamoum, M Guigou, C Bena, A. Crépieux
Density of states of interacting quantum wires with impurities: A Dyson equation approach
Physical Review B : Condensed matter and materials physics, American Physical Society, 2014, 90, pp.085408. ⟨10.1103/PhysRevB.90.085408⟩
Journal article
Claire Wahl, Jérôme Rech, Thibaut Jonckheere, Thierry Martin
Interactions and charge fractionalization in an electronic Hong-Ou-Mandel interferometer
Physical Review Letters, American Physical Society, 2014, 112 (4), pp.046802. ⟨10.1103/PhysRevLett.112.046802⟩
Journal article
Thibaut Jonckheere, J. Rech, Thierry Martin, Benoît Douçot, Denis Feinberg, Régis Mélin
Multipair dc Josephson resonances in a biased all-superconducting bijunction
Physical Review B : Condensed matter and materials physics, American Physical Society, 2013, 87 (21), pp.214501. ⟨10.1103/PhysRevB.87.214501⟩
Journal article
A. Crépieux
Series expansion of the quantum admittance in mesoscopic systems
Physical Review B : Condensed matter and materials physics, American Physical Society, 2013, 87, pp.155432. ⟨10.1103/PhysRevB.87.155432⟩
69 results