Search Results - "Sheard, F W"

Chaotic electron diffusion through stochastic webs enhances current flow in superlattices by Fromhold, T. M, Patanè, A, Bujkiewicz, S, Wilkinson, P. B, Fowler, D, Sherwood, D, Stapleton, S. P, Krokhin, A. A, Eaves, L, Henini, M, Sankeshwar, N. S, Sheard, F. W

“…Understanding how complex systems respond to change is of fundamental importance in the natural sciences. There is particular interest in systems whose…”
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Anomalous quantum reflection of Bose-Einstein condensates from a silicon surface : The role of dynamical excitations by SCOTT, R. G, MARTIN, A. M, FROMHOLD, T. M, SHEARD, F. W

“…We investigate the effect of interatomic interactions on the quantum-mechanical reflection of Bose-Einstein condensates from regions of rapid potential…”
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Observation of 'scarred' wavefunctions in a quantum well with chaotic electron dynamics by Wilkinson, P. B, Fromhold, T. M, Eaves, L, Sheard, F. W, Miura, N, Takamasu, T

“…Tunnel-current spectroscopy was used to map the quantum-mechanical energy levels of an electron confined in a semiconductor quantum well in a high magnetic…”
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Creation of solitons and vortices by bragg reflection of Bose-Einstein condensates in an optical lattice by Scott, R G, Martin, A M, Fromhold, T M, Bujkiewicz, S, Sheard, F W, Leadbeater, M

“…We study the dynamics of Bose-Einstein condensates in an optical lattice and harmonic trap. The condensates are set in motion by displacing the trap and…”
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Effects of stochastic webs on chaotic electron transport in semiconductor superlattices by Fromhold, T M, Krokhin, A A, Tench, C R, Bujkiewicz, S, Wilkinson, P B, Sheard, F W, Eaves, L

“…We investigate chaotic electron transport in the lowest miniband of a semiconductor superlattice with a tilted magnetic field. This experimentally accessible…”
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Space-charge buildup and bistability in resonant-tunneling double-barrier structures by SHEARD, F. W, TOOMBS, G. A

“…Using the sequential theory of resonant tunneling, the dc current-voltage characteristic of a double-barrier structure is calculated, taking into account the…”
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Manifestations of classical chaos in the energy level spectrum of a quantum well by Fromhold, TM, Wilkinson, PB, Sheard, FW, Eaves, L, Miao, J, Edwards, G

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Model for the voltage steps in the breakdown of the integer quantum Hall effect by Martin, A M, Benedict, K A, Sheard, F W, Eaves, L

“…In samples used to maintain the U.S. resistance standard the breakdown of the dissipationless integer quantum Hall effect occurs as a series of dissipative…”
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Probing the hole dispersion curves of a quantum well using resonant magnetotunneling spectroscopy by Hayden, RK, Maude, DK, Eaves, L, Valadares, EC, Henini, M, Sheard, FW, Hughes, OH, Portal, JC, Cury, L

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Use of stochastic web patterns to control electron transport in semiconductor superlattices by Stapleton, S.P., Bujkiewicz, S., Fromhold, T.M., Wilkinson, P.B., Patanè, A., Eaves, L., Krokhin, A.A., Henini, M., Sankeshwar, N.S., Sheard, F.W.

“…Chaotic electron transport has been explored in a variety of semiconductor structures in which the transition to chaos occurs by the gradual and progressive…”
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Sequential tunneling due to intersubband scattering in double-barrier resonant tunnelling devices by EAVES, L, TOOMBS, G. A, PORTAL, J. C, HILL, G, PATE, M. A, SHEARD, F. W, PAYLING, C. A, LEADBEATER, M. L, ALVES, E. S, FOSTER, T. J, SIMMONDS, P. E, HENINI, M, HUGHES, O. H

“…Magnetoquantum oscillations in the tunnel current of double-barrier n-GaAs/(AlGa)As/GaAs/(AlGa)As/GaAs resonant tunneling devices reveal evidence of sequential…”
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Observations of magnetoquantized interface states by electron tunneling in single-barrier n-(InGa)As-InP-n+(InGa)As heterostructures by SNELL, B. R, CHAN, K. S, PATE, M. A, SHEARD, F. W, EAVES, L, TOOMBS, G. A, MAUDE, D. K, PORTAL, J. C, BASS, S. J, CLAXTON, P, HILL, G

“…A new type of tunneling phenomenon in forward-biased single-barrier n(+)(InGa)As-n(-)(InGa)As-InP-n(+)(InGa)As heterostructures has been observed when a…”
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Capacitance–voltage studies of the electrostatic profile of single barrier GaAs/AlAs/GaAs structures containing self assembled quantum dots by Martin, P.M., Belyaev, A.E., Eaves, L., Main, P.C., Sheard, F.W., Ihn, T., Henini, M.

“…We investigate the capacitance–voltage, C(V), characteristics of a series of single-barrier n–i–n GaAs/AlAs/GaAs heterostructures incorporating a layer of…”
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Quantized ballistic resistance by Sheard, F. W, Eaves, L

“…Quantum interference effects are of great interest because they are a direct manifestation of the wave properties of matter. Advances in crystal growth, which…”
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Effect of inter-miniband tunneling on current resonances due to the formation of stochastic conduction networks in superlattices by Hardwick, D.P.A., Naylor, S.L., Bujkiewicz, S., Fromhold, T.M., Fowler, D., Patanè, A., Eaves, L., Krokhin, A.A., Wilkinson, P.B., Henini, M., Sheard, F.W.

“…We study the effects of inter-miniband electron tunneling and electric field domains on the current–voltage and conductance–voltage curves of biased…”
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Magnetotunnelling transport phenomena and quantum chaos in semiconductor heterostructures by Sheard, F.W., Fromhold, T.M., Wilkinson, P.B.

“…The energy levels and eigenfunctions of the electronic motion in a wide potential well with a large tilted magnetic field have been calculated in the regime of…”
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Quantum chaotic transport in double barrier tunnel structures by Fromhold, T.M., Wilkinson, P.B., Sheard, F.W., Eaves, L.

“…The transition from regular to chaotic classical electron dynamics in a wide potential well with a high tilted magnetic field is investigated using Poincaré…”
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Fermi-edge singularity in resonant tunneling by Geim, AK, Main, PC, La Scala, Jr, N, Eaves, L, Foster, TJ, Beton, PH, Sakai, JW, Sheard, FW, Henini, M, Hill, G, Pate, MA

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Quantum chaology in semiconductor heterostructures by Eaves, L, Fromhold, T M, Sheard, F W, Wilkinson, P B, Henini, M, Miura, N, Takamasu, T

“…Recent work on electron transport through classically chaotic heterostructure systems is briefly reviewed. The use of tunnel-current spectroscopy to map the…”
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Magnetotunneling spectroscopy of a quantum well in the regime of classical chaos by Fromhold, TM, Eaves, L, Sheard, FW, Leadbeater, ML, Foster, TJ, Main, PC

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