Zobrazeno 1 - 10
of 56
pro vyhledávání: '"C J G M Langerak"'
Autor:
John Singleton, D. J. Barnes, Robin J. Nicholas, François M. Peeters, J. T. Devreese, C. J. G. M. Langerak, Xiaoju Wu
Publikováno v:
Physical review: B
A detailed theoretical analysis is made of the experimental results on the polaron cyclotron-resonance mass in GaAs/${\mathrm{Al}}_{\mathit{x}}$${\mathrm{Ga}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$As heterostructures of Langerak et al. [Phys. Rev. B 3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e32284a3097b1ea3fe69a3081957e39
https://ora.ox.ac.uk/objects/uuid:2e6f09b0-3e88-4ef0-82fa-83b4d69ffdf5
https://ora.ox.ac.uk/objects/uuid:2e6f09b0-3e88-4ef0-82fa-83b4d69ffdf5
Autor:
Arzhang Ardavan, J. Singleton, L. Van Bockstal, M. von Ortenberg, L. Li, Robin J. Nicholas, Fritz Herlach, M.J. van de Pol, C J G M Langerak, H.-U. Mueller, A.F.G. van der Meer, A. De Keyser, Ria Bogaerts
Publikováno v:
Physica B, 246, 208-212
Scopus-Elsevier
Scopus-Elsevier
A 60 T non-destructive pulsed magnet is developed for use with the continuously tuneable free electron laser "FELIX". Far infrared cyclotron resonance experiments were performed using the energy range of FELIX (5-100 mu m) to study the effect of stro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27e1ec0b3493dc03e017fb95516e93ff
https://doi.org/10.1016/s0921-4526(97)00944-7
https://doi.org/10.1016/s0921-4526(97)00944-7
Publikováno v:
Journal of Physics : Condensed Matter, 16(1), 89-101. Institute of Physics
We present a combined experimental and theoretical study of interactions between two-dimensional electron gases (2DEGs) and terahertz (THz) free-electron lasers in the presence of quantizing magnetic fields. It is found both experimentally and theore
Autor:
Gunther Springholz, C. J. G. M. Langerak, Josef Oswald, P. C. Findlay, B. N. Murdin, C. R. Pidgeon, C. M. Ciesla, G. Bauer
Publikováno v:
Semiconductor Science and Technology. 14:809-816
We present measurements of electron cooling times in `quasi' quantum wires and dots as a function of the z-confinement. The states were created by application of a magnetic field along the growth direction of bulk material, a wide parabolic well and
Autor:
A. Homer, M. Kamal-Saadi, C. M. Ciesla, C J G M Langerak, R. A. Stradling, C. R. Pidgeon, G. Bauer, Erich Gornik, Gunther Springholz, B. N. Murdin, Josef Oswald
Publikováno v:
Physica E, 2, 121-125
Scopus-Elsevier
Scopus-Elsevier
Landau-level lifetimes are determined from saturation cyclotron resonance (CR) in wide parabolic wells, quantum wells and bulk PbTe-Pb1-xEuxTe systems. These narrow gap structures exhibit strong band non-parabolicity necessary to terminate the normal
Autor:
L. Van Bockstal, Robin J. Nicholas, L. Li, H.-U. Mueller, Fritz Herlach, M.J. van de Pol, C J G M Langerak, A. F. G. van der Meer, J. Singleton, Arzhang Ardavan
Publikováno v:
Physica B, 246, 400-403
The combination of a 60 T pulsed-field magnet and the continuous tunability of a high power, picosecond free-electron laser provides a powerful facility to study, e.g. cyclotron resonance in a wide range of materials with different effective masses a
Autor:
Manfred Helm, C J G M Langerak, Erich Gornik, S.-C. Lee, Gottfried Strasser, Ian Galbraith, B. N. Murdin, N. Nasser, Wolfgang Heiss, C. R. Pidgeon
Publikováno v:
Heriot-Watt University
Scopus-Elsevier
Physica Status Solidi B-Basic Research, 204, 208-211
Scopus-Elsevier
Physica Status Solidi B-Basic Research, 204, 208-211
We have made direct measurements of the intersubband lifetime in single GaAs quantum wells below the optical phonon energy at 36 meV, At low temperatures and excitations LO phonon emission is inhibited and acoustic phonon emission dominates; a sharp
Autor:
Ian Galbraith, Manfred Helm, Ben Murdin, Gottfried Strasser, S.-C. Lee, C. R. Pidgeon, Erich Gornik, Wolfgang Heiss, C. J. G. M. Langerak
Publikováno v:
Physical Review B. 55:5171-5176
We report the direct observation of a bottleneck in electron cooling in wide GaAs quantum wells. Intersubband lifetimes \ensuremath{\tau} and their dependence on intensity, lattice temperature ${\mathrm{T}}_{\mathrm{L}}$ , and well width have been me
Autor:
C. R. Pidgeon, P. J. P. Tang, S. J. Chung, C. C. Phillips, C. J. G. M. Langerak, B. N. Murdin, C. M. Ciesla, T.A. Malik, A. G. Norman, M. J. Pullin, Y B Li, W. T. Yuen, R. A. Stradling
Publikováno v:
Materials Science and Engineering: B. 44:260-265
The growth and evaluation of InAs/GaSb/AlSb quantum wells and InAs, -,Sb,/InAs strained layer superlattices are discussed. A characteristic of the InAs/GaSb/AISb combinations is their high mobility and the applications are mainly concerned with optim
Autor:
C. C. Phillips, R. A. Stradling, C. R. Pidgeon, C J G M Langerak, M. J. Pullin, Ben Murdin, Dino A. Jaroszynski, Ian Galbraith, M. Livingstone, C. M. Ciesla, P. J. P. Tang
Publikováno v:
Journal of Applied Physics, 80, 2994-2997
Room-temperature pump-probe transmission experiments have been performed on an arsenic-rich InAs/InAs1-xSbx strained layer superlattice (SLS) above the fundamental absorption edge near 10 mu m, using a ps far-infrared free-electron laser. Measurement