PhD manuscripts at the bottom of the page
Preprints
First order quantum breakdown of superconductivity in amorphous superconductors
Thibault Charpentier, David Perconte, Sébastien Léger, Kazi Rafsanjani Amin, Florent Blondelle, Frédéric Gay, Olivier Buisson, Lev Ioffe, Anton Khvalyuk, Igor Poboiko, Mikhail Feigel’man, Nicolas Roch, Benjamin Sacépé
arXiv:2404.09855 To appear in Nature Physics (2024)
Evidence for correlated electron pairs and triplets in quantum Hall interferometers
Wenmin Yang, David Perconte, Corentin Déprez, Kenji Watanabe, Takashi Taniguchi, Sylvain Dumont, Edouard Wagner, Frédéric Gay, Inès Safi, Hermann Sellier, Benjamin Sacépé
arXiv:2312.14767 To appear in Nature Communications (2024)
2024
Probing the fractional quantum Hall phases in valley-layer locked bilayer MoS2
Siwen Zhao, Jinqiang Huang, Valentin Crépel, Xingguang Wu, Tongyao Zhang, Hanwen Wang, Xiangyan Han, Zhengyu Li, Chuanying Xi, Senyang Pan, Zhaosheng Wang, Kenji Watanabe, Takashi Taniguchi, Benjamin Sacépé, Jing Zhang, Ning Wang, Jianming Lu, Nicolas Regnault, Zheng Vitto Han,
Nature Electronics AOP (2024)
Review article: Electron waves and quantum optics in graphene
Himadri Chakraborti, Cosimo Gorini, Angelika Knothe, Ming-Hao Liu, Péter Makk, Francois D. Parmentier, David Perconte, Klaus Richter, Preden Roulleau, Benjamin Sacépé, Christian Schönenberger, Wenmin Yang
Journal of Physics: Condensed Matter 36, 393001 (2024)
Near-power-law temperature dependence of the superfluid stiffness in strongly disordered superconductors
Anton V. Khvalyuk, Thibault Charpentier, Nicolas Roch, Benjamin Sacépé, Mikhail V. Feigel’man
2023
Evidence of chiral supercurrent in quantum Hall Josephson junctions,Hadrien Vignaud, David Perconte, Wenmin Yang, Bilal Kousar, Edouard Wagner, Frédéric Gay, Kenji Watanabe, Takashi Taniguchi, Hervé Courtois, Zheng Han, Hermann Sellier, Benjamin Sacépé,
Absence of edge reconstruction for quantum Hall edge channels in graphene devices
Alexis Coissard, Adolfo G. Grushin, Cécile Repellin, Louis Veyrat, Kenji Watanabe, Takashi Taniguchi, Frédéric Gay, Hervé Courtois, Hermann Sellier, Benjamin Sacépé, Science Advances 9, eadf7220(2023)
2022
Imaging tunable quantum Hall broken-symmetry orders in graphene
Alexis Coissard, David Wander, Hadrien Vignaud, Adolfo G. Grushin, Cécile Repellin, Kenji Watanabe, Takashi Taniguchi, Frédéric Gay, Clemens Winkelmann, Hervé Courtois, Hermann Sellier, Benjamin Sacépé, Nature 605, 51 (2022)
2021
Thermal relaxation in metal films bottlenecked by diffuson lattice excitations of amorphous substrates
E. M. Baeva, N. A. Titova, L. Veyrat, B. Sacépé, A. V. Semenov, G. N. Goltsman, A. I. Kardakova, V. S. Khrapai, Phys. Rev. Applied 15, 054014 (2021) and arXiv:2101:07071 (2021)
A tunable Fabry-Pérot quantum Hall interferometer in graphene
2020
Review Article in the Focus Issue on Emergent superconductivity: Quantum breakdown of superconductivity in low-dimensional materials
B. Sacépé, M. Feigel’man, T. Klapwijk, Nature Physics 16, 734 (2020)
Deficiency of the scaling collapse as an indicator of a superconductor-insulator quantum phase transition
A. Rogachev, B. Sacépé, Phys. Rev. B 101, 235164 (2020)
Helical quantum Hall phase in graphene on SrTiO3
Veyrat, C. Deprez, A. Coissard, X. Li, F. Gay, K. Watanabe, T. Taniguchi, Z. Han, B. Piot, H. Sellier, B. Sacépé Science 367, 781 (2020)
2019
Extreme Sensitivity of the Superconducting State in Thin Films
I. Tamir, A. Benyamini, E. J. Telford, F. Gorniaczyk, A. Doron, T. Levinson, D. Wang, F. Gay, B. Sacépé, J. Hone, K. Watanabe, T. Taniguchi, C. R. Dean, A. N. Pasupathy, D. Shahar
Science Advances 5:eaau3826 (2019)
Low Magnetic Field Regime of a Gate-Defined Quantum Point Contact in High-Mobility Graphene
Louis Veyrat, Anna Jordan, Katrin Zimmermann, Frédéric Gay, Kenji Watanabe, Takeshi Taniguchi, Hermann Sellier, Benjamin Sacépé
Nano Letters, 19, 635 (2019)
Collective energy gap of preformed Cooper-pairs in disordered superconductors
Thomas Dubouchet, Benjamin Sacépé, Johanna Seidemann, Dan Shahar, Marc Sanquer, Claude Chapelier
Nature Physics 15, 233 (2019)
Joule overheating poisons the fractional ac Josephson effect in topological Josephson junctions
K. Le Calvez, L. Veyrat, F. Gay, P. Plaindoux, C. Winkelmann, H. Courtois, B. Sacépé
Communications Physics, 2:4 (2019)
Low-temperature anomaly in disordered superconductors near Bc2 as a vortex-glass property
B. Sacépé, J. Seidemann, F. Gay, K. Davenport, A. Rogachev, M. Ovadia, K. Michaeli, M. V. Feigel’man
Nature Physics 15, 48-53 (2019)
2018
Pair-breaking quantum phase transtition in superconducting nanowires
H. Kim, F. Gay, A. Del Maestro, B. Sacépé, A. Rogachev
Nature Physics 14, 912 (2018)
2017
Instability of Insulators near Quantum Phase Transitions
Adam Doron, Idan Tamir, Tal Levinson, Maoz Ovadia, Benjamin Sacépé, Dan Shahar
Phys. Rev. Lett. 119, 247001 (2017)
K. Zimmmermann, A. Jordan, F. Gay, K. Watanabe, T. Taniguchi, Z. Han, V. Bouchiat, H. Sellier, B. Sacépé
Nature Communications, 8:14983 (2017)
Tunable sub-gap radiation detection with superconducting resonators
O. Dupré, A. Benoît, M. Calvo, A. Catalano, J. Goupy, C. Hoarau, T. Klein, K. Le Calvez, B. Sacépé, A. Monfardini and F. Levy-Bertrand
Supercond. Sci. Technol. 30, 045007 (2017)
2016
Relaxation of the resistive superconducting state in boron-doped diamond films
Kardakova, A. Shishkin, A. Semenov, S. Ryabchun, J. Bousquet, D. Eon, B. Sacepe, Th. Klein, E. Bustarret, G.N. Goltsman, T.M. Klapwijk
Phys. Rev. B, 93, 064506, (2016)
Interplay Between Electron Over-Heating and ac Josephson Effect
Alessandro De Cecco, Kévin Le Calvez, Benjamin Sacépé, Clemens Winkelmann, Hervé Courtois
Phys. Rev. B 93, 180505 (2016)
2010 – 2015
Disorder and screening in decoupled graphene on a metallic substrate,
C. Martin, S. Samaddar, B. Sacépé, A. Kimouche, J. Coraux, F. Fuchs, B. Grévin, H. Courtois, and C. B. Winkelmann,
Phys. Rev. B 91, 041406(R) (2015)
Evidence for a Finite Temperature Transition
M. Ovadia, D. Kalok, I. Tamir, S. Mitra, B. Sacépé, D. Shahar,
Scientific Reports, Aug. (2015)
High-field termination of a Cooper-pair insulator,
B. Sacépé, J. Seidemann, M. Ovadia, I. Tamir, D. Shahar, C. Chapelier, C. Strunk, B. Piot,
Phys. Rev. B 91, 220508(R) (2015)
Collapse of superconductivity in a hybrid tin-graphene Josephson junction array,
Z. Han, A. Allain, A. Arjmandi-Tash, K. Tikhonov, M. Feigel’man, B. Sacépé, V. Bouchiat,
Nature Physics 10, 380 (2014)
Niobium based superconducting nano-device fabrication using all-metal suspended masks junction array,
S. Samaddar, D. van Zanten, A. Fey, B. Sacépé, H. Courtois, C. Winkelmann ,
Nanotechnology 24, 375304 (2013)
Duality symmetry and its breakdown in the vicinity of the superconductor-insulator transition,
M. Ovadia, D. Kalok, B. Sacépé, D. Shahar,
Nature Physics 9, 415 (2013)
Gate-tuned normal and superconducting transport at the surface of a topological insulator,
B. Sacépé, J. Oostinga, J. Li, A. Ubaldini, N. Couto, E. Giannini, A. Morpurgo,
Nature Communications 2:575 (2011)
Transport through Graphene on SrTiO3,
N. Couto, B. Sacépé, A. Morpurgo,
Phys. Rev. Lett. 107, 225501 (2011)
Localization of preformed Cooper-pairs in disordered superconductors,
B. Sacépé, T. Dubouchet, C. Chapelier, M. Sanquer, M. Ovadia, D. Shahar, M. Feigel’man and L. Ioffe,
Nature Physics 7, 239 (2011)
Two-Dimensional Quantum Oscillations of the Conductance at LaAlO3/SrTiO3 Interfaces,
A. Caviglia, S. Gariglio, C. Cancellieri, B. Sacépé, A. Fete, N. Reyren, M. Gabay, A. Morpurgo, and J. M. Triscone,
Phys. Rev. Lett. 105, 236802 (2010)
Pseudogap in a thin film of a conventional superconductor,
B. Sacépé, C. Chapelier, T Baturina, V. Vinokur, M. Baklanov, and M. Sanquer,
Nature Communications 1:140 (2010)
Magnetotransport through graphene nanoribbons,
J. Oostinga, B. Sacépé, M. Craciun and A. Morpurgo,
Phys. Rev. B 81, 193408 (2010)
2005 – 2010
Electron-Phonon Decoupling in Disordered Insulators,
M. Ovadia, B. Sacépé, and D. Shahar,
Phys. Rev. Lett. 102, 176802 (2009)
Disorder-Induced Inhomogeneities of the Superconducting State Close to the Superconductor-Insulator Transition,
B. Sacépé, C. Chapelier, T.I. Baturina, V.M. Vinokur, M.R. Baklanov, and M. Sanquer,
Phys. Rev. Lett. 101, 157006 (2008)
Metal-to-insulator transition and superconductivity in boron-doped diamond,
B.Sacépé, C. Chapelier, C. Marcenat, J. Kacmarcik, T. Klein, M. Bernard, and E. Bustarret,
Philos. Trans. R. Soc. London A 366, 267 (2008)
Experimental indication of a BCS behaviour in superconducting diamond,
B. Sacépé, C. Chapelier, C. Marcenat, J. Kacmarcik, T. Klein, F. Omnes, and E. Bustarret,
Phys. Stat. Sol. A 203, 3315 (2006)
Tunneling Spectroscopy and Vortex Imaging in Boron-Doped Diamond,
B. Sacépé, C. Chapelier, C. Marcenat, J. Kacmarcik, T. Klein, M. Bernard, and E. Bustarret,
Phys. Rev. Lett. 96, 097006 (2006)
Superconducting diamagnetic fluctuations in ropes of carbon nanotubes,
M. Ferrier, F. Ladieu, M. Ocio, B. Sacépé, T. Vaugien, V. Pichot, P. Launois, H. Bouchiat,
Phys. Rev. B. 73, 094520 (2006)
PhD Theses
Katrin Zimmermann (2016) : Quantum point contact in high mobility graphene
Kévin Le Calvez (2017) : Signatures of a 4π-periodic Andreev bound state in topological Josephson junctions
Johanna Seidemann (2017) : Iontronics – Field effect study of different devices, using techniques of ionic liquid gating
Corentin Déprez (2021) : Helical edge transport and Fabry-Pérot interferometry in graphene quantum Hall effect
Marco Guerra (2022) : Electron optics in ballistic graphene studied by scanning gate microscopy
Alexis Coissard (2022) : The many-body ground states of the graphene quantum Hall effect and their edge channels
Thibault Charpentier (2023) : Quantum circuits and the superconductor-insulator transition in a disordered superconductor
Hadrien Vignaud (2023) : Study of graphene-based Josephson junctions in the quantum Hall
effect regime