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pro vyhledávání: '"Koop, E. A."'
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Autor:
Iqbal, M. J., Levy, Roi, Koop, E. J., Dekker, J. B., de Jong, J. P., van der Velde, J. H. M., Reuter, D., Wieck, A. D., Aguado, R., Meir, Yigal, van der Wal, C. H.
Publikováno v:
Nature 501, 79 (2013)
A quantum point contact (QPC) is a very basic nano-electronic device: a short and narrow transport channel between two electron reservoirs. In clean channels electron transport is ballistic and the conductance $G$ is then quantised as a function of c
Externí odkaz:
http://arxiv.org/abs/1307.7167
We present a numerical study of dephasing of electron spin ensembles in a diffusive quasi-one-dimensional GaAs wire due to the D'yakonov-Perel' spin-dephasing mechanism. For widths of the wire below the spin precession length and for equal strength o
Externí odkaz:
http://arxiv.org/abs/0810.1413
Autor:
Koop, E. J., Iqbal, M. J., Limbach, F., Boute, M., van Wees, B. J., Reuter, D., Wieck, A. D., Kooi, B. J., van der Wal, C. H.
Publikováno v:
Semicond. Sci. Technol. 28, 025006 (2013)
Ohmic contacts to a two-dimensional electron gas (2DEG) in GaAs/AlGaAs heterostructures are often realized by annealing of AuGe/Ni/Au that is deposited on its surface. We studied how the quality of this type of ohmic contact depends on the annealing
Externí odkaz:
http://arxiv.org/abs/0809.0928
We present a numerical study of spin relaxation in a semiclassical electron ensemble in a large ballistic quantum dot. The dot is defined in a GaAs/AlGaAs heterojunction system with a two-dimensional electron gas, and relaxation occurs due to Dressel
Externí odkaz:
http://arxiv.org/abs/0804.2968
Publikováno v:
Phys. Rev. Lett 101, 056602 (2008)
We report electronic control and measurement of an imbalance between spin-up and spin-down electrons in micron-scale open quantum dots. Spin injection and detection was achieved with quantum point contacts tuned to have spin-selective transport, with
Externí odkaz:
http://arxiv.org/abs/0801.2699
Autor:
Koop, E. J., Lerescu, A. I., Liu, J., van Wees, B. J., Reuter, D., Wieck, A. D., van der Wal, C. H.
Publikováno v:
J. Supercond. Nov. Magn. 20, 433 (2007)
The conductance of a quantum point contact (QPC) shows several features that result from many-body electron interactions. The spin degeneracy in zero magnetic field appears to be spontaneously lifted due to the so-called 0.7 anomaly. Further, the g-f
Externí odkaz:
http://arxiv.org/abs/0708.0294
Autor:
Koop, E. J., Lerescu, A. I., Liu, J., van Wees, B. J., Reuter, D., Wieck, A. D., van der Wal, C. H.
Publikováno v:
J. Supercond. Nov. Magn. 20, 433 (2007)
The spin degeneracy of the lowest subband that carries one-dimensional electron transport in quantum point contacts appears to be spontaneously lifted in zero magnetic field due to a phenomenon that is known as the 0.7 anomaly. We measured this energ
Externí odkaz:
http://arxiv.org/abs/0706.0792
We investigate quantum fluctuations in the non-local resistance of an open quantum dot which is connected to four reservoirs via quantum point contacts. In this four-terminal quantum dot the voltage path can be separated from the current path. We mea
Externí odkaz:
http://arxiv.org/abs/0705.3179
Autor:
Baez Navarro, X., van Bockstal, M.R., Nawawi, D., Broeckx, G., Colpaert, C.G., Doebar, S.C., Hogenes, M.C.H., Koop, E., Lambein, K., Peeters, D.J.E., Sinke, R.H.J.A., van Brakel, J.B., van der Starre-Gaal, J., van der Vegt, B., van de Vijver, K., Vreuls, C.P.H., Vreuls, W., Westenend, P.J., van Deurzen, C.H.M.
Publikováno v:
In European Journal of Cancer November 2022 175 Supplement 1:S88-S88
