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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Jacquet Romain ATER
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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Ronetti Flavio PhD candidate

List of Publications

53 results
Journal article
Dario Ferraro, Thibaut Jonckheere, J. Rech, Thierry Martin
Electronic quantum optics beyond the integer quantum Hall effect
physica status solidi (b), Wiley, 2017, 254 (3), pp.1600531. 〈10.1002/pssb.201600531〉
Journal article
Jérôme Rech, Dario Ferraro, Thibaut Jonckheere, Luca Vannucci, Maura Sassetti, Thierry Martin
Minimal Excitations in the Fractional Quantum Hall Regime
Physical Review Letters, American Physical Society, 2017, 118 (7), pp.076801. 〈10.1103/PhysRevLett.118.076801〉
Journal article
T. Jonckheere, J. Rech, A. Zazunov, R. Egger, Thierry Martin
Hanbury Brown and Twiss noise correlations in a topological superconductor beam splitter
Physical Review B : Condensed matter and materials physics, American Physical Society, 2017, 95 (5), pp.054514. 〈10.1103/PhysRevB.95.054514〉
Journal article
Shaon Sahoo, Adeline Crépieux, Mireille Lavagna
Effet Kondo dans une boîte quantique en condition de non-équilibre en présence d'une accumulation de spin et d'un champ magnétique
EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2017, 116 (5), pp.57005. 〈10.1209/0295-5075/116/57005〉
Journal article
Fabienne Michelini, Adeline Crépieux, Katawoura Beltako
Entropy production in photovoltaic-thermoelectric nanodevices from the non-equilibrium Green’s function formalism
Journal of Physics: Condensed Matter, IOP Publishing, 2017, 29 (17), pp.175301 〈10.1088/1361-648X/aa62e4〉
Journal article
Denis Chevallier, Mathias Albert, Pierre Devillard
Probing Majorana and Andreev bound states with waiting times
EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2016, 116, pp.27005. 〈10.1209/0295-5075/116/27005〉
Journal article
A. Marguerite, C. Cabart, C. Wahl, B. Roussel, V. Freulon, D. Ferraro, Ch. Grenier, J.-M. Berroir, B. Plaçais, T. Jonckheere, J. Rech, T. Martin, P. Degiovanni, A. Cavanna, Y. Jin, G. Fève
Decoherence and relaxation of a single electron in a one-dimensional conductor
Physical Review B : Condensed matter and materials physics, American Physical Society, 2016, 94, pp.115311 〈10.1103/PhysRevB.94.115311〉
Journal article
R Zamoum, M Lavagna, Adeline Crépieux
Nonsymmetrized noise in a quantum dot: Interpretation in terms of energy transfer and coherent superposition of scattering paths
Physical Review B : Condensed matter and materials physics, American Physical Society, 2016, 93 (23), pp.235449 〈10.1103/PhysRevB.93.235449〉
Journal article
J. Rech, C. Wahl, Thibaut Jonckheere, Thierry Martin
Electron interferometry in integer quantum Hall edge channels
Journal of Statistical Mechanics: Theory and Experiment, IOP Science, 2016, pp.054008. 〈10.1088/1742-5468/2016/05/054008〉
Journal article
Adeline Crépieux, Fabienne Michelini
Heat-charge mixed noise and thermoelectric efficiency fluctuations
Journal of Statistical Mechanics: Theory and Experiment, IOP Publishing, 2016, 2016, pp.054015. 〈10.1088/1742-5468/2016/05/054015〉
53 results