Zobrazeno 1 - 10
of 5 481
pro vyhledávání: '"Hey, R"'
Publikováno v:
Phys. Rev. B 86, 155309 (2012)
We analyze fluctuation of the layer thicknesses and its influence on the strain state of (In,Ga)As/(Al,Ga)As micro-tubes containing quantum well structures. In those structures a curved high-mobility two-dimensional electron gas (HM2DEG) is establish
Externí odkaz:
http://arxiv.org/abs/1907.09368
Publikováno v:
Phys. Rev. Lett. 109, 266602 (2012)
Spin dephasing via the spin-orbit interaction (SOI) is a major mechanism limiting the electron spin lifetime in III-V zincblende quantum wells. The dephasing can be suppressed in GaAs(111) quantum wells by applying an electric field. The suppression
Externí odkaz:
http://arxiv.org/abs/1903.09596
Publikováno v:
Phys. Rev. B 94, 125311 (2016)
We show by spatially and time-resolved photoluminescence that the application of an electric field transverse to the plane of an intrinsic GaAs (111) quantum well (QW) allows the transport of photogenerated electron spins polarized along the directio
Externí odkaz:
http://arxiv.org/abs/1903.05069
Autor:
Poux, A., Wasilewski, Z. R., Friedland, K. J., Hey, R., Ploog, K. H., Airey, R., Plochocka, P., Maude, D. K.
Publikováno v:
Phys. Rev. B 94, 075411 (2016)
Intra Landau level thermal activation, from localized states in the tail, to delocalized states above the mobility edge in the same Landau level, explains the $B_c(T)$ (half width of the dissipationless state) phase diagram for a number of different
Externí odkaz:
http://arxiv.org/abs/1609.00485
In theory ratchets enable energy harvesting by rectifying electrical fluctuations in conductors and semiconductors. Certain rectification effects in nanostructures have been demonstrated earlier. But these were not found to be usable for energy harve
Externí odkaz:
http://arxiv.org/abs/1512.04475
Autor:
Chana, J. K., Sich, M., Fras, F., Gorbach, A. V., Skryabin, D. V., Cancellieri, E., Cerda-Méndez, E. A., Biermann, K., Hey, R., Santos, P. V., Skolnick, M. S., Krizhanovskii, D. N.
Publikováno v:
Physical Review Letters 115 (25), 256401 (2015)
Semiconductor microcavities operating in the polaritonic regime are highly non-linear, high speed systems due to the unique half-light, half-matter nature of polaritons. Here, we report for the first time the observation of propagating multi-soliton
Externí odkaz:
http://arxiv.org/abs/1407.7713
Autor:
Straetmans, Gert
Publikováno v:
Rechtskundig weekblad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2097::376e0c62e7e590bac18d9423c461ae1f
https://hdl.handle.net/10067/457380151162165141
https://hdl.handle.net/10067/457380151162165141
Autor:
Krizhanovskii, D. N., Whittaker, D. M., Bradley, R. A., Guda, K., Sarkar, D., Sanvitto, D., Vina, L., Cerda, E., Santos, P., Biermann, K., Hey, R., Skolnick, M. S.
Publikováno v:
Phys. Rev. Lett. 104, 126402 (2010)
We demonstrate the creation of vortices in a macroscopically occupied polariton state formed in a semiconductor microcavity. A weak external laser beam carrying orbital angular momentum (OAM) is used to imprint a vortex on the condensate arising from
Externí odkaz:
http://arxiv.org/abs/1309.7171
Autor:
Sich, M., Fras, F., Chana, J. K., Skolnick, M. S., Krizhanovskii, D. N., Gorbach, A. V., Hartley, R., Skryabin, D. V., Gavrilov, S. V., Cerda-Mendez, E. A., Biermann, K., Hey, R., Santos, P. V.
We report on the spin properties of bright polariton solitons supported by an external pump to compensate losses. We observe robust circularly polarised solitons when a circularly polarised pump is applied, a result attributed to phase synchronisatio
Externí odkaz:
http://arxiv.org/abs/1306.5232
Autor:
Krizhanovskii, D. N., Cerda, E. A., Gavrilov, S. S., Sarkar, D., Guda, K., Bradley, R., Santos, P. V., Hey, R., Biermann, K., Sich, M., Fras, F., Skolnick, M. S.
Polariton condensates are investigated in periodical potentials created by surface acoustic waves using both resonant and non-resonant optical excitation. Under resonant pumping condensates are formed due to polariton parametric scattering from the p
Externí odkaz:
http://arxiv.org/abs/1212.6397