Conductance fluctuations and field asymmetry of rectification in graphene (2009)
Ojeda-Aristizabal, C., Monteverde, M., Weil, R., Ferrier, M., Gueron, S., Bouchiat, H.
We investigate conductance fluctuations as a function of carrier density and magnetic field in diffusive mesoscopic samples made from monolayer and bilayer graphene. We determine their correlation...
Contactless photoconductivity measurements on (Si) nanowires (2009)
Chepelianskii, A. D., Chiodi, F., Ferrier, M., Gueron, S., Rouviere, E., Bouchiat, H.
Conducting nanowires possess remarkable physical properties unattainable in bulk materials. However our understanding of their transport properties is limited by the difficulty of connecting them...
Monteverde, M., Ojeda-Aristizabal, C., Weil, R., Ferrier, M., Gueron, S., Bouchiat, H., ...
Both transport $\tau_{tr}$ and elastic scattering times $\tau_{e}$ are experimentally determined from the carrier density dependence of the magnetoconductance of monolayer and bilayer graphene. Both...
Tuning the proximity effect in a superconductor-graphene-superconductor junction (2009)
Ojeda-Aristizabal, C. M., Ferrier, M., Gueron, S., Bouchiat, H.
We have tuned in situ the proximity effect in a single graphene layer coupled to two Pt/Ta superconducting electrodes. An annealing current through the device changed the transmission coefficient of...
Hall detection of time-reversal symmetry breaking under AC electric driv ing (2008)
Chepelianskii, A. D., Bouchiat, H.
In a four terminal sample microscopic time-reversibility leads to symmetry relations between resistance measurements where the role of current and voltage leads are exchanged. These reciprocity...
Tuning the Josephson current in carbon nanotubes with the Kondo effect (2008)
Eichler, A., Deblock, R., Weiss, M., Karrasch, C., Meden, V., Schonenberger, C., ...
We investigate the Josephson current in a single wall carbon nanotube connected to superconducting electrodes. We focus on the parameter regime in which transport is dominated by Kondo physics. A...
Magnetic field anti-symmetry of photovoltaic voltage in evanescent microwave fields (2008)
Chepelianskii, A., Guéron, S., Pierre, F., Cavanna, A., Etienne, B., Bouchiat, H.
A two dimensional electron system without spatial inversion symmetry develops a sample specific dc voltage when exposed to a microwave radiation at low temperature. We investigate this photovoltaic...
Hendrik Willem Christiaan, Prof. Dr. C. Dekker, Samenstelling Promotiecommissie, Rector Magnificus Voorzitter, Dr. H. Bouchiat
Carbon nanotube junctions and devices Henk W.Ch. Postma arbon nanotube unctions and devices Henk W.Ch. Postma Carbon nanotube junctions and devices
Phonon assisted dynamical Coulomb blockade in a thin suspended graphite sheet (2008)
Chepelianskii, A., Delplace, P., Shailos, A., Kasumov, A., Deblock, R., Monteverde, M., ...
The differential conductance in a suspended few layered graphene sample is fou nd to exhibit a series of quasi-periodic sharp dips as a function of bias at l ow temperature. We show that they can be...
Disorder induced transverse delocalisation in ropes of carbon nanotubes (2008)
Ferrier, M., Chepelianskii, A., Guéron, S., Bouchiat, H.
A rope of carbon nanotubes is constituted of an array of parallel single wall nanotubes with nearly identical diameters. In most cases the individual nanotubes within a rope have different helicities...
Proximity DC squids in the long junction limit (2007)
Angers, L., Chiodi, F., Cuevas, J. C., Montambaux, G., Ferrier, M., Gueron, S., ...
We report the design and measurement of Superconducting/normal/superconducting (SNS) proximity DC squids in the long junction limit, i.e. superconducting loops interrupted by two normal metal wires...
Ferrier, M., Rowe, A. C. H., Gueron, S., Bouchiat, H., Texier, C., Montambaux, G.
We investigate weak localization in metallic networks etched in a two dimensional electron gas between $25\:$mK and $750\:$mK when electron-electron (e-e) interaction is the dominant phase breaking...
Very low shot noise in carbon nanotubes (2007)
Kociak, M., Gueron, S., Kasumov, A., Reulet, B., Bouchiat, H.
We have performed noise measurements on suspended ropes of single wall carbon nanotubes (SWNT) between 1 and 300 K for different values of dc current through the ropes. We find that the shot noise is...
Proximity Induced Superconductivity and Multiple Andreev Reflections in Few-Layer-Graphene (2006)
Shailos, A., Nativel, W., Kasumov, A., Collet, C., Ferrier, M., Gueron, S., ...
We have investigated electronic transport of few-layer-graphene (FLG) connected to superconducting electrodes. The device is prepared by mechanical exfoliation of graphite. A small mesa of FLG is...
AC Josephson effect and resonant Cooper pair tunneling emission of a Cooper Pair Transistor (2006)
Pierre, F., Bouchiat, H., Deblock, R.
We measure the high-frequency emission of a single Cooper pair transistor(SCPT) in the regime where transport is only due to tunneling of Cooper pairs. This is achieved by coupling on-chip the SCPT...
Pierre, F., Bouchiat, H., Deblock, R.
We consider a single Cooper pair transistor (SCPT) coupled capacitively to a voltage biased Josephson junction, used as a high frequency generator. Thanks to the high energy of photons generated by...
Magnetic field asymmetry of mesocopic dc rectification in Aharonov Bohm rings (2006)
Angers, L., Zakka-Bajjani, E., Deblock, R., Gueron, S., Cavanna, A., Gennser, U., ...
Fundamental Casimir-Onsager symmetry rules for linear response do not apply to non linear transport. This motivates the investigation of nonlinear dc conductance of mesoscopic GaAs/GaAlAs rings in a...
Superconducting diamagnetic fluctuations in ropes of carbon nanotubes (2005)
Ferrier, M., Ladieu, F., Ocio, M., Sacepe, B., Vaugien, T., Pichot, V., ...
We report low-temperature magnetisation measurements on a large number of purified ropes of single wall carbon nanotubes. In spite of a large superparamagnetic contribution due to the small...
Emission and absorption asymmetry in the quantum noise of a Josephson junction (2005)
Pierre, F., Bouchiat, H., Deblock, R.
We measure current fluctuations of mesoscopic devices in the quantum regime, when the frequency is of the order of or higher than the applied voltage or temperature. Detection is designed to probe...
Ferrier, M., Kasumov, A. Yu., Agache, V., Buchaillot, L., Bonnot, A-M., Naud, C., ...
We have altered the superconductivity of a suspended rope of single walled carbon nanotubes, by coating it with organic polymers. Upon coating, the normal state resistance of the rope changes by less...
Intrinsic Low Temperature Paramagnetism in B-DNA (2005)
Nakamae, S., Cazayous, M., Sacuto, A., Monod, P., Bouchiat, H.
We present experimental study of magnetization in $\lambda$-DNA in conjunction with structural measurements. The results show the surprising interplay between the molecular structures and their...
Superconductivity in ropes of carbon nanotubes (2004)
Ferrier, M., De Martino, A., Kasumov, A., Gueron, S., Kociak, M., Egger, R., ...
Recent experimental and theoretical results on intrinsic superconductivity in ropes of single-wall carbon nanotubes are reviewed and compared. We find strong experimental evidence for...
Proximity Effect in a Superconductor-Metallofullerene-Superconductor Molecular Junction (2004)
Kasumov, A. Yu., Tsukagoshi, K., Kawamura, M., Kobayashi, T., Aoyagi, Y., Senba, K., ...
We report low-temperature transport measurements through molecules of Gd metallofullerenes between superconducting suspended electrodes. The presence and number of molecules in the 2 nm-wide gap...
Quantum transport through carbon nanotubes: proximity induced and intrinsic superconductivity (2003)
Kasumov, A., Kociak, M., Ferrier, M., Deblock, R., Gueron, S., Reulet, B., ...
We report low temperature transport measurements on suspended single walled carbon nanotubes (both individual tubes and ropes). The technique we have developed, where tubes are soldered on low...
Very low shot noise in carbon nanotubes (2002)
Kociak, M., Gueron, S., Kasumov, A., Reulet, B., Bouchiat, H.
We have performed noise measurements on suspended ropes of single wall carbon nanotubes (SWNT) between 1 and 300 K for different values of dc current through the ropes. We find that the shot noise is...
Conductivity and Atomic Structure of Isolated Multiwalled Carbon Nanotubes (2002)
Kasumov, A. Y., Bouchiat, H., Reulet, B., Stephan, O., Khodos, I. I.
We report associated high resolution transmission electron microscopy (HRTEM) and transport measurements on a series of isolated multiwalled carbon nanotubes. HRTEM observations, by revealing...
Diamagnetic orbital response of mesoscopic silver rings (2001)
Deblock, R., Bel, R., Reulet, B., Bouchiat, H., Mailly, D.
We report measurements of the flux-dependent orbital magnetic susceptibility of an ensemble of 10^5 disconnected silver rings at 217 MHz. Because of the strong spin-orbit scattering rate in silver...
Magneto-polarisability of mesoscopic systems (2001)
Noat, Y., Deblock, R., Reulet, B., Bouchiat, H.
In order to understand how screening is modified by electronic interferences in a mesoscopic isolated system, we have computed both analytically and numerically the average thermodynamic and time...
AC electric and magnetic responses of non-connected Aharonov-Bohm rings (2001)
Deblock, R., Noat, Y., Reulet, B., Bouchiat, H., Mailly, D.
Signature of phase coherence on the electric and magnetic response of non connected Aharonov-Bohm rings is measured by a resonant method at 350 MHz between 20 mK and 500 mK. The rings are etched in a...
Superconductivity in Ropes of Single-Walled Carbon Nanotubes (2001)
Bouchiat, H., Gorbatov, Y. B., Guéron, S., Kasumov, A. Y., Khodos, I. I., Kociak, M., ...
Superconductivity in Ropes of Single-Walled Carbon Nanotubes (2000)
Kociak, M., Kasumov, A. Yu., Gueron, S., Reulet, B., Vaccarini, L., Khodos, I. I., ...
We report measurements on ropes of Single Walled Carbon Nanotubes (SWNT) in low-resistance contact to non-superconducting (normal) metallic pads, at low voltage and at temperatures down to 70 mK. In...
Measurements of flux dependent screening in Aharonov-Bohm rings (1999)
Deblock, R., Noat, Y., Bouchiat, H., Reulet, B., Mailly, D.
In order to investigate the effect of electronic phase coherence on screening we have measured the flux dependent polarizability of isolated mesoscopic rings at 350 MHz. At low temperature (below 100...
Bolometric detection of mechanical bending waves in suspended carbon nanotubes (1999)
Reulet, B., Kasumov, A. Yu., Kociak, M., Deblock, R., Khodos, I. I., Gorbatov, Yu. B., ...
We show that it is possible to detect mechanical bending modes on 1 micron long ropes of single walled-carbon nanotubes suspended between 2 metallic contacts. This is done by measuring either their...
Proximity-induced superconductivity in carbon nanotubes. (1999)
Kasumov, A., Deblock, R., Kociak, M., Reulet, B., Bouchiat, H., Khodos, I., ...
Supercurrents through single-walled carbon nanotubes. (1999)
Kasumov, A., Deblock, R., Kociak, M., Reulet, B., Bouchiat, H., Khodos, I., ...
Conductivity and Atomic Structure of Isolated Multiwalled Carbon Nanotubes (1997)
Kasumov, A. Yu., Bouchiat, H., Reulet, B., Stephan, O., Khodos, I. I., Gorbatov, Yu. B., ...
We report associated high resolution transmission electron microscopy (HRTEM) and transport measurements on a series of isolated multiwalled carbon nanotubes. HRTEM observations, by revealing...
Fert, A., De Courtenay, N., Bouchiat, H.
While the existence of a phase transition at finite Tc is well admitted for Ising spin glasses in 3-dimensions, recent theoretical studies have proposed that T c is zero in Heisenberg spin glasses...
INFLUENCE OF ANISOTROPY ON THE CRITICAL TEMPERATURE OF METALLIC SPIN GLASSES (1988)
Fert, A., De Courtenay, N., Bouchiat, H.
We analyse the anisotropy dependence of the transition temperature of CuMn and AgMn spin glasses doped with Au or Pt impurities. We discuss the role of anisotropy in the phase transition of RKKY...
MAGNETIC ORDER IN VERY DILUTED Y-Er ALLOYS (1988)
Caudron, R., Bouchiat, H., Brown, P., Monod, P., Tholence, J.
Neutron scattering and non-linear susceptibility measurements were performed on Y single crystals doped with 3, 2, 1 and 0.5 at. % Er. All the samples exhibit long range order satellites. Though Er...
Fert, A., De Courtenay, N., Bouchiat, H.
While the existence of a phase transition at finite Tc is well admitted for Ising spin glasses in 3-dimensions, recent theoretical studies have proposed that T c is zero in Heisenberg spin glasses...
INFLUENCE OF ANISOTROPY ON THE CRITICAL TEMPERATURE OF METALLIC SPIN GLASSES (1988)
Fert, A., De Courtenay, N., Bouchiat, H.
We analyse the anisotropy dependence of the transition temperature of CuMn and AgMn spin glasses doped with Au or Pt impurities. We discuss the role of anisotropy in the phase transition of RKKY...
MAGNETIC ORDER IN VERY DILUTED Y-Er ALLOYS (1988)
Caudron, R., Bouchiat, H., Brown, P., Monod, P., Tholence, J.
Neutron scattering and non-linear susceptibility measurements were performed on Y single crystals doped with 3, 2, 1 and 0.5 at. % Er. All the samples exhibit long range order satellites. Though Er...
Fert, A., De Courtenay, N., Bouchiat, H.
While the existence of a phase transition at finite Tc is well admitted for Ising spin glasses in 3-dimensions, recent theoretical studies have proposed that T c is zero in Heisenberg spin glasses...
INFLUENCE OF ANISOTROPY ON THE CRITICAL TEMPERATURE OF METALLIC SPIN GLASSES (1988)
Fert, A., De Courtenay, N., Bouchiat, H.
We analyse the anisotropy dependence of the transition temperature of CuMn and AgMn spin glasses doped with Au or Pt impurities. We discuss the role of anisotropy in the phase transition of RKKY...
MAGNETIC ORDER IN VERY DILUTED Y-Er ALLOYS (1988)
Caudron, R., Bouchiat, H., Brown, P., Monod, P., Tholence, J.
Neutron scattering and non-linear susceptibility measurements were performed on Y single crystals doped with 3, 2, 1 and 0.5 at. % Er. All the samples exhibit long range order satellites. Though Er...
Determination of the critical exponents in the Ag Mn spin glass (1986)
We present nonlinear magnetization measurements in the AgMn spin glass in a wide concentration range (0.4 % < c < 24 %). The analysis of the results in the frame work of the existence of a phase...
De Courtenay, N., Bouchiat, H., Hurdequint, H., Fert, A.
In this paper, we present non-linear magnetization measurements as a function of field at different temperatures T ≽ Tg for CuMn 0.2 % and AgMn 0.5 %, alloys doped with various amounts of gold...
Determination of the critical exponents in the Ag Mn spin glass (1986)
We present nonlinear magnetization measurements in the AgMn spin glass in a wide concentration range (0.4 % < c < 24 %). The analysis of the results in the frame work of the existence of a phase...
De Courtenay, N., Bouchiat, H., Hurdequint, H., Fert, A.
In this paper, we present non-linear magnetization measurements as a function of field at different temperatures T ≽ Tg for CuMn 0.2 % and AgMn 0.5 %, alloys doped with various amounts of gold...
Determination of the critical exponents in the Ag Mn spin glass (1986)
We present nonlinear magnetization measurements in the AgMn spin glass in a wide concentration range (0.4 % < c < 24 %). The analysis of the results in the frame work of the existence of a phase...
De Courtenay, N., Bouchiat, H., Hurdequint, H., Fert, A.
In this paper, we present non-linear magnetization measurements as a function of field at different temperatures T ≽ Tg for CuMn 0.2 % and AgMn 0.5 %, alloys doped with various amounts of gold...
Observation of 1/f magnetic fluctuations in a spin glass (1985)
Ocio, M., Bouchiat, H., Monod, P.
We observe spontaneous magnetic fluctuations at 4.2 K in zero field for the amorphous spin glass(Al 2O3)0.1(MnO)0.5(SiO2) 0.4 and for the crystalline spin glass compound CsNiFeF6. In both cases the...
Observation of 1/f magnetic fluctuations in a spin glass (1985)
Ocio, M., Bouchiat, H., Monod, P.
We observe spontaneous magnetic fluctuations at 4.2 K in zero field for the amorphous spin glass(Al 2O3)0.1(MnO)0.5(SiO2) 0.4 and for the crystalline spin glass compound CsNiFeF6. In both cases the...
Observation of 1/f magnetic fluctuations in a spin glass (1985)
Ocio, M., Bouchiat, H., Monod, P.
We observe spontaneous magnetic fluctuations at 4.2 K in zero field for the amorphous spin glass(Al 2O3)0.1(MnO)0.5(SiO2) 0.4 and for the crystalline spin glass compound CsNiFeF6. In both cases the...
Equilibrium magnetization of a spin glass : is mean-field theory valid ? (1982)
Measurement of field cooled magnetization of a AgMn 10.6 % alloy as a function of temperature between 4.2 K and 50 K and magnetic field from 26 to 9 000 gauss is performed in order to link the low...
Short-range order in AgMn spin glass alloys : description from X-ray evidence (1982)
Further small angle X-ray diffusion experiments carried out on AgMn crystals containing a concentration of 1.4 at. % to 24 at. % Mn allow us to reject the description of S.R.O. based on the existence...
Equilibrium magnetization of a spin glass : is mean-field theory valid ? (1982)
Measurement of field cooled magnetization of a AgMn 10.6 % alloy as a function of temperature between 4.2 K and 50 K and magnetic field from 26 to 9 000 gauss is performed in order to link the low...
Short-range order in AgMn spin glass alloys : description from X-ray evidence (1982)
Further small angle X-ray diffusion experiments carried out on AgMn crystals containing a concentration of 1.4 at. % to 24 at. % Mn allow us to reject the description of S.R.O. based on the existence...
Equilibrium magnetization of a spin glass : is mean-field theory valid ? (1982)
Measurement of field cooled magnetization of a AgMn 10.6 % alloy as a function of temperature between 4.2 K and 50 K and magnetic field from 26 to 9 000 gauss is performed in order to link the low...
Short-range order in AgMn spin glass alloys : description from X-ray evidence (1982)
Further small angle X-ray diffusion experiments carried out on AgMn crystals containing a concentration of 1.4 at. % to 24 at. % Mn allow us to reject the description of S.R.O. based on the existence...