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

Bertin Bruno PhD candidate
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Crépieux Adeline University faculty
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Devillard Pierre University faculty
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Gremaud Benoît Researcher
Chef de l’équipe « Nanophysique »
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Iyer Kishore PhD candidate
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Jonckheere Thibaut Researcher
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Martin Thierry Director
University faculty
Correspondant Institut IPhU
Référent pôle de recherche interdisciplinaire et intersectoriel AMU - Sciences, technologies avancées
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Raymond Laurent University faculty
Correspondant Institut AMUTech
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Rech Jérôme Researcher
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Ronetti Flavio University faculty
Verga Alberto University faculty
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List of Publications

107 results
Preprint, Working paper
Kota Fukuzawa, Takeo Kato, Mamoru Matsuo, Thibaut Jonckheere, Jérôme Rech, Thierry Martin
Spin Pumping into Carbon Nanotubes
Preprint, Working paper
B. Bertin-Johannet, L. Raymond, Jérôme Rech, T. Jonckheere, B. Grémaud, D. C. Glattli, T. Martin
Photo-assisted current in the fractional quantum Hall effect as a probe of the quasiparticle operator scaling dimension
Journal article
Si Min Chan, Benoît Grémaud, G. Batrouni
Designer flat bands: Topology and enhancement of superconductivity
Physical Review B, 2022, 106 (10), pp.104514. ⟨10.1103/PhysRevB.106.104514⟩
Journal article
Adeline Crépieux, M. Lavagna
Dynamical charge susceptibility in nonequilibrium double quantum dots
Physical Review B, 2022, 106 (11), pp.115439. ⟨10.1103/PhysRevB.106.115439⟩
Preprint, Working paper
Thibaut Jonckheere, Jérôme Rech, Benoît Grémaud, Thierry Martin
Anyonic statistics revealed by the Hong-Ou-Mandel dip for fractional excitations
Journal article
Daniel Tay, Benoît Grémaud, Christian Miniatura
Momentum signatures of site percolation in disordered two-dimensional ferromagnets
Physical Review B, 2022, 106 (1), pp.014203. ⟨10.1103/PhysRevB.106.014203⟩
Journal article
Benoît Grémaud, A. Popoff, Jérôme Rech, Thibaut Jonckheere, Laurent Raymond, S. Malherbe, Thierry Martin
Scattering Theory of Non-Equilibrium Noise and Delta $T$ current fluctuations through a quantum dot
Journal of Physics: Condensed Matter, 2022, 34 (18), pp.185301. ⟨10.1088/1361-648X/ac5200⟩
Journal article
Benoît Grémaud, Si Min Chan, G. G. Batrouni
Pairing and superconductivity in quasi one-dimensional flat band systems: Creutz and sawtooth lattices
Physical Review B, 2022, 105 (2), pp.24502. ⟨10.1103/PhysRevB.105.024502⟩
Journal article
Giacomo Rebora, Jérôme Rech, Dario Ferraro, Thibaut Jonckheere, Thierry Martin, Maura Sassetti
Delta-T noise for fractional quantum Hall states at different filling factor
Phys.Rev.Res., 2022, 4 (4), pp.043191. ⟨10.1103/PhysRevResearch.4.043191⟩
Journal article
Bruno Bertin-Johannet, Jérôme Rech, Thibaut Jonckheere, Benoît Grémaud, Laurent Raymond, Thierry Martin
Microscopic theory of photo-assisted electronic transport in normal-metal/BCS-superconductor junctions
Physical Review B, 2022, 105 (11), pp.115112. ⟨10.1103/PhysRevB.105.115112⟩
107 results