Results
author = "De Boeck, J."
Spatially resolved ultrafast precessional magnetization reversal
Description :
Spatially resolved measurements of quasi-ballistic precessional magnetic
switching in a microstructure are presented. Crossing current wires allow
detailed study of the precessional switching induced by coincident longitudinal
and transverse magnetic field pulses. Though the response is initially
...
Repository :
arXiv
Language(s) :
Undetermined
A GaAs ON Si COPLANAR TECHNOLOGY BY EMBEDDED MOLECULAR BEAM EPITAXY
Description :
No abstract available
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Strongly reduced bias dependence in spin-tunnel junctions obtained by ultraviolet light assisted oxidation
Description :
This version is available at the following Publisher URL: http://apl.aip.org
Repository :
JUWEL (JUelicher Wissenschaftliche Elektronische Literatur)
Language(s) :
German
Commensurability effects in Andreev antidot billiards
Description :
An Andreev billiard was realized in an array of niobium filled antidots in a
high-mobility InAs/AlGaSb heterostructure. Below the critical temperature T_C
of the Nb dots we observe a strong reduction of the resistance around B=0 and a
suppression of the commensurability peaks, which are usually fo...
Repository :
arXiv
Language(s) :
Undetermined
Andreev reflection at high magnetic fields: Evidence for electron and hole transport in edge states
Description :
We have studied magnetotransport in arrays of niobium filled grooves in an
InAs/AlGaSb heterostructure. The critical field of up to 2.6 T permits to enter
the quantum Hall regime. In the superconducting state, we observe strong
magnetoresistance oscillations, whose amplitude exceeds the Shubnikov-...
Repository :
arXiv
Language(s) :
Undetermined
Quantitative study of magnetotransport through a (Ga,Mn)As single ferromagnetic domain
Author(s) :
Goennenwein, S.T.B.
,
Russo, S.
,
Morpurgo, A.F.
,
Klapwijk, T.M.
,
van Roy, W.
,
de Boeck, J.
Description :
Repository :
TU Delft Repository
Language(s) :
English
Experimental Separation of Rashba and Dresselhaus spin-splittings in Semiconductor Quantum Wells
Author(s) :
Ganichev, Sergey
,
Belkov, Vassilij
,
Golub, Leonid
,
Ivchenko, Eougenious
,
Schneider, Petra
,
Giglberger, Stephan
Description :
The relative strengths of Rashba and Dresselhaus terms describing the spin-orbit coupling in semiconductor quantum well (QW) structures are extracted from photocurrent measurements on n-type InAs QWs containing a two-dimensional electron gas (2DEG). This novel technique makes use of the angular dist...
Repository :
Publikationsserver der Universität Regensburg
Language(s) :
Undetermined
Microwave Measurements on YBaCuO Thin Films and Realisation of Microwave Superconducting Devices
Author(s) :
Lepercq, P.
,
Carru, J.
,
Mehri, F.
,
Crosnier, Y.
,
Bourzgui, N.
,
François, I.
,
De Boeck, J.
,
Borghs, G.
Description :
Two characterisations methods in microwaves are presented. They permit to obtain σ*, Rs and λ for a HTS film without the need of any theoretical model for the superconductivity. The best film tested exhibits at 35GHz and 78K a Rs value of 10mΩ, at least three times lower than the copper one. A quasi...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Electrical Spin Injection in a Ferromagnetic / Tunnel Barrier/ Semiconductor Heterostructure
Author(s) :
Motsnyi, V. F.
,
Safarov, V. I.
,
De Boeck, J.
,
Das, J.
,
Van Roy, W.
,
Goovaerts, E.
,
Borghs, G.
Description :
We demonstrate experimentally the electrical ballistic electron spin
injection from a ferromagnetic metal / tunnel barrier contact into a
semiconductor III-V heterostructure. We introduce the Oblique Hanle Effect
technique for reliable optical measurement of the degree of injected spin
polarizatio...
Repository :
arXiv
Language(s) :
Undetermined
Imaging of the [Mn2+(3d5) + hole] complex in GaAs by Cross-sectional Scanning Tunneling Microscopy
Author(s) :
Yakunin, A. M.
,
Silov, A. Yu.
,
Koenraad, P. M.
,
Van Roy, W.
,
De Boeck, J.
,
Wolter, J. H.
Description :
We present results on the direct spatial mapping of the wave-function of a
hole bound to a Mn acceptor in GaAs. To investigate individual Mn dopants at
the atomic scale in both ionized and neutral configurations, we used a room
temperature cross-sectional scanning tunneling microscope (X-STM). We ...
Repository :
arXiv
Language(s) :
Undetermined