Search Results - "Lea, M.J."

Confined electron crystals and Rydberg states on liquid helium by Glasson, P., Collin, E., Fozooni, P., Frayne, P.G., Harrabi, K., Bailey, W., Papageorgiou, G., Mukharsky, Y., Lea, M.J.

“…Experiments are in progress to measure and control the quantum states of surface state electrons on liquid helium, both individually and in arrays, for…”
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Complete and selective recovery of lithium from EV lithium-ion batteries: Modeling and optimization using oxalic acid as a leaching agent by Rouquette, Léa M.J., Petranikova, Martina, Vieceli, Nathália

“…[Display omitted] •Successful use of oxalic acid as a selective leaching and precipitating agent.•A design of experiments is used to determine the factors…”
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Advances in the Application of an Early and Selective Recovery of Lithium from Spent Lithium-Ion Batteries Via Hydrometallurgical Methods by Rouquette, Léa M.J

“…In 2020 alone, the use of electric vehicles (EVs) contributed to more than 50 Mt CO2-eq of savings in GHG emissions globally. Given their performance in terms…”
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Intensification of lithium carbonation in the thermal treatment of spent EV Li-ion batteries via waste utilization and selective recovery by water leaching by Rouquette, Léa M.J., Lemaître, Tom, Vieceli, Nathália, Petranikova, Martina

“…The recycling of lithium-ion batteries remains an essential question, the recovery of lithium is a central matter since the European Commission identified it…”
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Trapping single electrons on liquid helium by Glasson, P., Papageorgiou, G., Harrabi, K., Rees, D.G., Antonov, V., Collin, E., Fozooni, P., Frayne, P.G., Mukharsky, Y., Lea, M.J.

“…Surface-state electrons on liquid helium, localised in quantum dots, have been proposed as condensed matter qubits. We now demonstrate experimentally that…”
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Could we Quantum Compute with Electrons on Helium? by Lea, M.J., Frayne, P.G., Mukharsky, Yu

“…Phil Platzman and Mark Dykman have recently suggested (Science 284 (1999) 1967) that electrons on the surface of liquid helium could form a set of interacting…”
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Magnetotransport in the two-dimensional electron fluid and solid on liquid helium by Lea, M.J., Dykman, M.I.

“…We present measurements and theory of the magnetoconductivity σ( B) of the 2D electron fluid and Wigner crystal above the surface of liquid helium…”
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Observation of dynamical ordering in a confined Wigner crystal by Glasson, P., Dotsenko, V., Fozooni, P., Lea, M.J., Bailey, W., Papageorgiou, G., Andresen, S.E., Kristensen, A.

“…We demonstrate the fabrication and control of surface state electrons on superfluid helium in microchannel devices. The response of these devices shows strong…”
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Dynamics of a 2D Wigner solid in a magnetic field: the plastic limit by Rubo, Yuri G, Lea, M.J

“…We analyse the AC response of an unpinned Wigner crystal with plastic deformation and of a viscous electron fluid, allowing for the mixing of the transverse…”
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Detecting electrons on helium with a single-electron transistor (SET) by Papageorgiou, G, Mukharsky, Yu, Harrabi, K, Glasson, P, Fozooni, P, Frayne, P.G, Collin, E, Lea, M.J

“…A superconducting single electron transistor device has been designed and fabricated inside a ring which defines a shallow pool of liquid helium. The objective…”
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Microelectronics on liquid helium by Glasson, P, Andresen, S.Erfurt, Ensell, G, Dotsenko, V, Bailey, W, Fozooni, P, Kristensen, A, Lea, M.J

“…Microelectronic devices for surface state electrons on liquid helium are being developed using surface structures on quartz and GaAs substrates. Conduction…”
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Analysis of the Critical Behavior of the Metal-Insulator Transition by Variation of the Compensation in Neutron Transmutation Doped74Ge-70Ge Crystals by Rentzsch, R., M ller, M., Reich, Ch, Sandow, B., Ionov, A.N., Fozooni, P., Lea, M.J., Ginodman, V., Shlimak, I.

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Analysis of the Critical Behavior of the Metal-Insulator Transition by Variation of the Compensation in Neutron Transmutation Doped 74Ge-70Ge Crystals by Rentzsch, R., Müller, M., Reich, Ch, Sandow, B., Ionov, A.N., Fozooni, P., Lea, M.J., Ginodman, V., Shlimak, I.

“…We investigated four series of Ge samples of isotopic mixtures of 74Ge and 70Ge doped by the neutron transmutation doping technique with a compensation degree…”
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Effect of localized and delocalized electrons on the low-temperature conductivity and magnetoconductivity of metallic Ge homogeneously doped by As by Rentzsch, R, Ionov, A.N, Fozooni, P, Lea, M.J

“…At T=20 mK –2 K we analyze the temperature dependence of conductivity and magnetoconductivity of a series of metallic samples of Ge : As close to the critical…”
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Microwave saturation and the Rabi frequency of the Rydberg states of electrons on helium by Collin, E., Bailey, W., Fozooni, P., Frayne, P.G., Glasson, P., Harrabi, K., Lea, M.J., Papageorgiou, G.

“…We present measurements of the resonant microwave excitation of the Rydberg energy levels of surface state electrons on superfluid helium. The temperature…”
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The Scaling Behaviour of the Metal-Insulator Transition of Isotopically Engineered Neutron-Transmutation Doped Germanium by Rentzsch, R., Ionov, A. N., Reich, Ch, Müller, M., Sandow, B., Fozooni, P., Lea, M. J., Ginodman, V., Shlimak, I.

“…We measured on the dielectric side, with |N/Nc — 1| ≤ 0.64 the critical indices of the metal–insulator transition (MIT) in n‐Ge with low (1.4 and 12%) and…”
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Non-linear transport and a non-equilibrium phase transition in 2D electrons on liquid helium by Djerfi, K, Dotsenko, V, Fozooni, P, Rubo, Yu.G, Lea, M.J

“…The magnetoconductivity σ( B) of the two-dimensional (2D) electron solid on liquid helium is highly non-linear, as the Hall velocity passes the phase velocity…”
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The Quantum Corrections to the Conductivity for Homogeneously Doped Barely Metallic Germanium by Ionov, A. N., Rentzsch, R., Fozooni, P., Lea, M. J.

“…We report the results of electrical conductivity studies down to 30 mK for barely metallic samples in the vicinity of the metal–insulator transition (MIT). We…”
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On the Sign and Temperature Dependence of Magnetoresistance in Variable-Range Hopping in Highly Compensated n-GaAs: The Role of Spin-Effects by Rentzsch, R., Ionov, A. N., Sandow, B., Stefanyi, P., Fozooni, P., Lea, M. J.

“…The magnetoresistance of neutron‐transmutation‐doped (NTD) n‐type GaAs has been measured in the variable range hopping regime at temperatures, T = 0.03 to 1.6…”
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Conduction of electrons on liquid helium along channels produced by multi-layer microfabrication by van Haren, R.J.F., Acres, G., Fozooni, P., Kristensen, A., Lea, M.J., Richardson, P.J., Valkering, A.M.C., van der Heijden, R.W.

“…We demonstrate the conduction of free electrons along an array of microchannels of liquid helium, 30 μm wide, 1 μm deep and 1.5 mm long, held by surface…”
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