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Showing 1 to 12 of 16 entries
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Evidence for a Finite-Temperature Insulator.

Scientific reports

Ovadia M, Kalok D, Tamir I, Mitra S, Sacépé B, Shahar D.
PMID: 26310437
Sci Rep. 2015 Aug 27;5:13503. doi: 10.1038/srep13503.

In superconductors the zero-resistance current-flow is protected from dissipation at finite temperatures (T) by virtue of the short-circuit condition maintained by the electrons that remain in the condensed state. The recently suggested finite-T insulator and the "superinsulating" phase are...

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Ovadia M, Kalok D, Tamir I, et al. Evidence for a Finite-Temperature Insulator. Sci Rep. 2015;5:13503doi: 10.1038/srep13503.
Ovadia, M., Kalok, D., Tamir, I., Mitra, S., Sacépé, B., & Shahar, D. (2015). Evidence for a Finite-Temperature Insulator. Scientific reports, 513503. https://doi.org/10.1038/srep13503
Ovadia, M, et al. "Evidence for a Finite-Temperature Insulator." Scientific reports vol. 5 (2015): 13503. doi: https://doi.org/10.1038/srep13503
Ovadia M, Kalok D, Tamir I, Mitra S, Sacépé B, Shahar D. Evidence for a Finite-Temperature Insulator. Sci Rep. 2015 Aug 27;5:13503. doi: 10.1038/srep13503. PMID: 26310437; PMCID: PMC4550897.
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Helical quantum Hall phase in graphene on SrTiO.

Science (New York, N.Y.)

Veyrat L, Déprez C, Coissard A, Li X, Gay F, Watanabe K, Taniguchi T, Han Z, Piot BA, Sellier H, Sacépé B.
PMID: 32054761
Science. 2020 Feb 14;367(6479):781-786. doi: 10.1126/science.aax8201.

The ground state of charge-neutral graphene under perpendicular magnetic field was predicted to be a quantum Hall topological insulator with a ferromagnetic order and spin-filtered, helical edge channels. In most experiments, however, an insulating state is observed that is...

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Veyrat L, Déprez C, Coissard A, et al. Helical quantum Hall phase in graphene on SrTiO. Science. 2020;367(6479):781-786doi: 10.1126/science.aax8201.
Veyrat, L., Déprez, C., Coissard, A., Li, X., Gay, F., Watanabe, K., Taniguchi, T., Han, Z., Piot, B. A., Sellier, H., & Sacépé, B. (2020). Helical quantum Hall phase in graphene on SrTiO. Science (New York, N.Y.), 367(6479), 781-786. https://doi.org/10.1126/science.aax8201
Veyrat, Louis, et al. "Helical quantum Hall phase in graphene on SrTiO." Science (New York, N.Y.) vol. 367,6479 (2020): 781-786. doi: https://doi.org/10.1126/science.aax8201
Veyrat L, Déprez C, Coissard A, Li X, Gay F, Watanabe K, Taniguchi T, Han Z, Piot BA, Sellier H, Sacépé B. Helical quantum Hall phase in graphene on SrTiO. Science. 2020 Feb 14;367(6479):781-786. doi: 10.1126/science.aax8201. PMID: 32054761.
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Low-temperature anomaly in disordered superconductors near .

Nature physics

Sacépé B, Seidemann J, Gay F, Davenport K, Rogachev A, Ovadia M, Michaeli K, Feigel'man MV.
PMID: 30613207
Nat Phys. 2019 Jan;15(1):48-53. doi: 10.1038/s41567-018-0294-6. Epub 2018 Oct 08.

Strongly disordered superconductors in a magnetic field display many characteristic properties of type-II superconductivity-except at low temperatures, where an anomalous linear temperature dependence of the resistive critical field

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Sacépé B, Seidemann J, Gay F, et al. Low-temperature anomaly in disordered superconductors near . Nat Phys. 2018;15(1):48-53doi: 10.1038/s41567-018-0294-6.
Sacépé, B., Seidemann, J., Gay, F., Davenport, K., Rogachev, A., Ovadia, M., Michaeli, K., & Feigel'man, M. V. (2019). Low-temperature anomaly in disordered superconductors near . Nature physics, 15(1), 48-53. https://doi.org/10.1038/s41567-018-0294-6
Sacépé, Benjamin, et al. "Low-temperature anomaly in disordered superconductors near ." Nature physics vol. 15,1 (2019): 48-53. doi: https://doi.org/10.1038/s41567-018-0294-6
Sacépé B, Seidemann J, Gay F, Davenport K, Rogachev A, Ovadia M, Michaeli K, Feigel'man MV. Low-temperature anomaly in disordered superconductors near . Nat Phys. 2019 Jan;15(1):48-53. doi: 10.1038/s41567-018-0294-6. Epub 2018 Oct 08. PMID: 30613207; PMCID: PMC6314456.
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Instability of Insulators near Quantum Phase Transitions.

Physical review letters

Doron A, Tamir I, Levinson T, Ovadia M, Sacépé B, Shahar D.
PMID: 29286730
Phys Rev Lett. 2017 Dec 15;119(24):247001. doi: 10.1103/PhysRevLett.119.247001. Epub 2017 Dec 13.

Thin films of amorphous indium oxide undergo a magnetic field driven superconducting to insulator quantum phase transition. In the insulating phase, the current-voltage characteristics show large current discontinuities due to overheating of electrons. We show that the onset voltage...

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Doron A, Tamir I, Levinson T, et al. Instability of Insulators near Quantum Phase Transitions. Phys Rev Lett. 2017;119(24):247001doi: 10.1103/PhysRevLett.119.247001.
Doron, A., Tamir, I., Levinson, T., Ovadia, M., Sacépé, B., & Shahar, D. (2017). Instability of Insulators near Quantum Phase Transitions. Physical review letters, 119(24), 247001. https://doi.org/10.1103/PhysRevLett.119.247001
Doron, A, et al. "Instability of Insulators near Quantum Phase Transitions." Physical review letters vol. 119,24 (2017): 247001. doi: https://doi.org/10.1103/PhysRevLett.119.247001
Doron A, Tamir I, Levinson T, Ovadia M, Sacépé B, Shahar D. Instability of Insulators near Quantum Phase Transitions. Phys Rev Lett. 2017 Dec 15;119(24):247001. doi: 10.1103/PhysRevLett.119.247001. Epub 2017 Dec 13. PMID: 29286730.
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Niobium-based superconducting nano-device fabrication using all-metal suspended masks.

Nanotechnology

Samaddar S, van Zanten D, Fay A, Sacépé B, Courtois H, Winkelmann CB.
PMID: 23974037
Nanotechnology. 2013 Sep 20;24(37):375304. doi: 10.1088/0957-4484/24/37/375304. Epub 2013 Aug 23.

We report a novel method for the fabrication of superconducting nano-devices based on niobium. The well-known difficulties of lithographic patterning of high-quality niobium are overcome by replacing the usual organic resist mask by a metallic one. The quality of...

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Samaddar S, van Zanten D, Fay A, et al. Niobium-based superconducting nano-device fabrication using all-metal suspended masks. Nanotechnology. 2013;24(37):375304doi: 10.1088/0957-4484/24/37/375304.
Samaddar, S., van Zanten, D., Fay, A., Sacépé, B., Courtois, H., & Winkelmann, C. B. (2013). Niobium-based superconducting nano-device fabrication using all-metal suspended masks. Nanotechnology, 24(37), 375304. https://doi.org/10.1088/0957-4484/24/37/375304
Samaddar, S, et al. "Niobium-based superconducting nano-device fabrication using all-metal suspended masks." Nanotechnology vol. 24,37 (2013): 375304. doi: https://doi.org/10.1088/0957-4484/24/37/375304
Samaddar S, van Zanten D, Fay A, Sacépé B, Courtois H, Winkelmann CB. Niobium-based superconducting nano-device fabrication using all-metal suspended masks. Nanotechnology. 2013 Sep 20;24(37):375304. doi: 10.1088/0957-4484/24/37/375304. Epub 2013 Aug 23. PMID: 23974037.
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Pseudogap in a thin film of a conventional superconductor.

Nature communications

Sacépé B, Chapelier C, Baturina TI, Vinokur VM, Baklanov MR, Sanquer M.
PMID: 21266990
Nat Commun. 2010;1:140. doi: 10.1038/ncomms1140.

A superconducting state is characterized by the gap in the electronic density of states, which vanishes at the superconducting transition temperature T(c). It was discovered that in high-temperature superconductors, a noticeable depression in the density of states, the pseudogap,...

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Sacépé B, Chapelier C, Baturina TI, et al. Pseudogap in a thin film of a conventional superconductor. Nat Commun. 2010;1:140doi: 10.1038/ncomms1140.
Sacépé, B., Chapelier, C., Baturina, T. I., Vinokur, V. M., Baklanov, M. R., & Sanquer, M. (2010). Pseudogap in a thin film of a conventional superconductor. Nature communications, 1140. https://doi.org/10.1038/ncomms1140
Sacépé, Benjamin, et al. "Pseudogap in a thin film of a conventional superconductor." Nature communications vol. 1 (2010): 140. doi: https://doi.org/10.1038/ncomms1140
Sacépé B, Chapelier C, Baturina TI, Vinokur VM, Baklanov MR, Sanquer M. Pseudogap in a thin film of a conventional superconductor. Nat Commun. 2010;1:140. doi: 10.1038/ncomms1140. PMID: 21266990.
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Electron-phonon decoupling in disordered insulators.

Physical review letters

Ovadia M, Sacépé B, Shahar D.
PMID: 19518807
Phys Rev Lett. 2009 May 01;102(17):176802. doi: 10.1103/PhysRevLett.102.176802. Epub 2009 Apr 28.

The current-voltage characteristics measured in the insulating state terminating the superconducting phase in disordered superconductors exhibit sharp threshold voltages, where the current abruptly changes by as much as 5 orders of magnitude. We analyze the current-voltage characteristics of an...

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Ovadia M, Sacépé B, Shahar D. Electron-phonon decoupling in disordered insulators. Phys Rev Lett. 2009;102(17):176802doi: 10.1103/PhysRevLett.102.176802.
Ovadia, M., Sacépé, B., & Shahar, D. (2009). Electron-phonon decoupling in disordered insulators. Physical review letters, 102(17), 176802. https://doi.org/10.1103/PhysRevLett.102.176802
Ovadia, M, et al. "Electron-phonon decoupling in disordered insulators." Physical review letters vol. 102,17 (2009): 176802. doi: https://doi.org/10.1103/PhysRevLett.102.176802
Ovadia M, Sacépé B, Shahar D. Electron-phonon decoupling in disordered insulators. Phys Rev Lett. 2009 May 01;102(17):176802. doi: 10.1103/PhysRevLett.102.176802. Epub 2009 Apr 28. PMID: 19518807.
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Disorder-induced inhomogeneities of the superconducting state close to the superconductor-insulator transition.

Physical review letters

Sacépé B, Chapelier C, Baturina TI, Vinokur VM, Baklanov MR, Sanquer M.
PMID: 18999631
Phys Rev Lett. 2008 Oct 10;101(15):157006. doi: 10.1103/PhysRevLett.101.157006. Epub 2008 Oct 10.

Scanning tunneling spectroscopy at very low temperatures on homogeneously disordered superconducting titanium nitride thin films reveals strong spatial inhomogeneities of the superconducting gap Delta in the density of states. Upon increasing disorder, we observe suppression of the superconducting critical...

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Sacépé B, Chapelier C, Baturina TI, et al. Disorder-induced inhomogeneities of the superconducting state close to the superconductor-insulator transition. Phys Rev Lett. 2008;101(15):157006doi: 10.1103/PhysRevLett.101.157006.
Sacépé, B., Chapelier, C., Baturina, T. I., Vinokur, V. M., Baklanov, M. R., & Sanquer, M. (2008). Disorder-induced inhomogeneities of the superconducting state close to the superconductor-insulator transition. Physical review letters, 101(15), 157006. https://doi.org/10.1103/PhysRevLett.101.157006
Sacépé, B, et al. "Disorder-induced inhomogeneities of the superconducting state close to the superconductor-insulator transition." Physical review letters vol. 101,15 (2008): 157006. doi: https://doi.org/10.1103/PhysRevLett.101.157006
Sacépé B, Chapelier C, Baturina TI, Vinokur VM, Baklanov MR, Sanquer M. Disorder-induced inhomogeneities of the superconducting state close to the superconductor-insulator transition. Phys Rev Lett. 2008 Oct 10;101(15):157006. doi: 10.1103/PhysRevLett.101.157006. Epub 2008 Oct 10. PMID: 18999631.
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A tunable Fabry-Pérot quantum Hall interferometer in graphene.

Nature nanotechnology

Déprez C, Veyrat L, Vignaud H, Nayak G, Watanabe K, Taniguchi T, Gay F, Sellier H, Sacépé B.
PMID: 33633403
Nat Nanotechnol. 2021 May;16(5):555-562. doi: 10.1038/s41565-021-00847-x. Epub 2021 Feb 25.

Electron interferometry with quantum Hall (QH) edge channels in semiconductor heterostructures can probe and harness the exchange statistics of anyonic excitations. However, the charging effects present in semiconductors often obscure the Aharonov-Bohm interference in QH interferometers and make advanced...

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Déprez C, Veyrat L, Vignaud H, et al. A tunable Fabry-Pérot quantum Hall interferometer in graphene. Nat Nanotechnol. 2021;16(5):555-562doi: 10.1038/s41565-021-00847-x.
Déprez, C., Veyrat, L., Vignaud, H., Nayak, G., Watanabe, K., Taniguchi, T., Gay, F., Sellier, H., & Sacépé, B. (2021). A tunable Fabry-Pérot quantum Hall interferometer in graphene. Nature nanotechnology, 16(5), 555-562. https://doi.org/10.1038/s41565-021-00847-x
Déprez, Corentin, et al. "A tunable Fabry-Pérot quantum Hall interferometer in graphene." Nature nanotechnology vol. 16,5 (2021): 555-562. doi: https://doi.org/10.1038/s41565-021-00847-x
Déprez C, Veyrat L, Vignaud H, Nayak G, Watanabe K, Taniguchi T, Gay F, Sellier H, Sacépé B. A tunable Fabry-Pérot quantum Hall interferometer in graphene. Nat Nanotechnol. 2021 May;16(5):555-562. doi: 10.1038/s41565-021-00847-x. Epub 2021 Feb 25. PMID: 33633403; PMCID: PMC7610789.
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Tunneling spectroscopy and vortex imaging in boron-doped diamond.

Physical review letters

Sacépé B, Chapelier C, Marcenat C, Kacmarcik J, Klein T, Bernard M, Bustarret E.
PMID: 16606302
Phys Rev Lett. 2006 Mar 10;96(9):097006. doi: 10.1103/PhysRevLett.96.097006. Epub 2006 Mar 09.

We present the first scanning tunneling spectroscopy study of single-crystalline boron-doped diamond. The measurements were performed below 100 mK with a low temperature scanning tunneling microscope. The tunneling density of states displays a clear superconducting gap. The temperature evolution...

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Sacépé B, Chapelier C, Marcenat C, et al. Tunneling spectroscopy and vortex imaging in boron-doped diamond. Phys Rev Lett. 2006;96(9):097006doi: 10.1103/PhysRevLett.96.097006.
Sacépé, B., Chapelier, C., Marcenat, C., Kacmarcik, J., Klein, T., Bernard, M., & Bustarret, E. (2006). Tunneling spectroscopy and vortex imaging in boron-doped diamond. Physical review letters, 96(9), 097006. https://doi.org/10.1103/PhysRevLett.96.097006
Sacépé, B, et al. "Tunneling spectroscopy and vortex imaging in boron-doped diamond." Physical review letters vol. 96,9 (2006): 097006. doi: https://doi.org/10.1103/PhysRevLett.96.097006
Sacépé B, Chapelier C, Marcenat C, Kacmarcik J, Klein T, Bernard M, Bustarret E. Tunneling spectroscopy and vortex imaging in boron-doped diamond. Phys Rev Lett. 2006 Mar 10;96(9):097006. doi: 10.1103/PhysRevLett.96.097006. Epub 2006 Mar 09. PMID: 16606302.
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Transport through graphene on SrTiO3.

Physical review letters

Couto NJ, Sacépé B, Morpurgo AF.
PMID: 22182031
Phys Rev Lett. 2011 Nov 25;107(22):225501. doi: 10.1103/PhysRevLett.107.225501. Epub 2011 Nov 21.

We report transport measurements through graphene on SrTiO(3) substrates as a function of magnetic field B, carrier density n, and temperature T. The large dielectric constant of SrTiO(3) very effectively screens long-range electron-electron interactions and potential fluctuations, making Dirac...

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Couto NJ, Sacépé B, Morpurgo AF. Transport through graphene on SrTiO3. Phys Rev Lett. 2011;107(22):225501doi: 10.1103/PhysRevLett.107.225501.
Couto, N. J., Sacépé, B., & Morpurgo, A. F. (2011). Transport through graphene on SrTiO3. Physical review letters, 107(22), 225501. https://doi.org/10.1103/PhysRevLett.107.225501
Couto, Nuno J G, et al. "Transport through graphene on SrTiO3." Physical review letters vol. 107,22 (2011): 225501. doi: https://doi.org/10.1103/PhysRevLett.107.225501
Couto NJ, Sacépé B, Morpurgo AF. Transport through graphene on SrTiO3. Phys Rev Lett. 2011 Nov 25;107(22):225501. doi: 10.1103/PhysRevLett.107.225501. Epub 2011 Nov 21. PMID: 22182031.
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Two-dimensional quantum oscillations of the conductance at LaAlO3/SrTiO3 interfaces.

Physical review letters

Caviglia AD, Gariglio S, Cancellieri C, Sacépé B, Fête A, Reyren N, Gabay M, Morpurgo AF, Triscone JM.
PMID: 21231492
Phys Rev Lett. 2010 Dec 03;105(23):236802. doi: 10.1103/PhysRevLett.105.236802. Epub 2010 Dec 01.

We report on a study of magnetotransport in LaAlO3 /SrTiO3 interfaces characterized by mobilities of the order of several thousands cm2/V s. We observe Shubnikov-de Haas oscillations whose period depends only on the perpendicular component of the magnetic field....

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Caviglia AD, Gariglio S, Cancellieri C, et al. Two-dimensional quantum oscillations of the conductance at LaAlO3/SrTiO3 interfaces. Phys Rev Lett. 2010;105(23):236802doi: 10.1103/PhysRevLett.105.236802.
Caviglia, A. D., Gariglio, S., Cancellieri, C., Sacépé, B., Fête, A., Reyren, N., Gabay, M., Morpurgo, A. F., & Triscone, J. M. (2010). Two-dimensional quantum oscillations of the conductance at LaAlO3/SrTiO3 interfaces. Physical review letters, 105(23), 236802. https://doi.org/10.1103/PhysRevLett.105.236802
Caviglia, A D, et al. "Two-dimensional quantum oscillations of the conductance at LaAlO3/SrTiO3 interfaces." Physical review letters vol. 105,23 (2010): 236802. doi: https://doi.org/10.1103/PhysRevLett.105.236802
Caviglia AD, Gariglio S, Cancellieri C, Sacépé B, Fête A, Reyren N, Gabay M, Morpurgo AF, Triscone JM. Two-dimensional quantum oscillations of the conductance at LaAlO3/SrTiO3 interfaces. Phys Rev Lett. 2010 Dec 03;105(23):236802. doi: 10.1103/PhysRevLett.105.236802. Epub 2010 Dec 01. PMID: 21231492.
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Showing 1 to 12 of 16 entries