Lars Tel.-Nr in Berlin (PDI) lautet ab sofort wieder:
030 20377351
Georg
--
Georg Richter
2. Physikalisches Institut
RWTH Aachen
Templergraben 55
52056 Aachen
Germany
Tel.: +49-241-802-7115
Fax.: +49-241-8022-306
Infos von Paul.
Bernd
-------- Ursprüngliche Nachricht --------
Betreff: Re: Spin LED's
Datum: Wed, 11 Aug 2004 12:06:31 -0500
Von: Paul Crowell <crowell(a)physics.umn.edu>
An: Bernd Beschoten <bernd.beschoten(a)physik.rwth-aachen.de>
Referenzen: <5.2.1.1.2.20040810181405.0303c960(a)mail.physics.umn.edu>
Hi Bernd,
The samples you get will be from the attached subset.
-Paul
Paul Crowell
Associate Professor of Physics
University of Minnesota
School of Physics and Astronomy
116 Church St. SE
Minneapolis, MN 55455
Phone: 612-624-4828
Fax: 612-624-4578
crowell(a)physics.umn.edu
http://www.physics.umn.edu/groups/fastspin/
Nachricht von Paul Crowell (s.u.) . Wir werden Proben für
die gepulste Injektion bekommen.
Bernd
-------- Ursprüngliche Nachricht --------
Betreff: Spin LED's
Datum: Tue, 10 Aug 2004 23:55:43 -0500
Von: Paul Crowell <crowell(a)physics.umn.edu>
An: bernd.beschoten(a)physik.rwth-aachen.de
CC: palms001(a)umn.edu
Hi Bernd,
I talked to Chris, and so we are both on board. We will provide you with
some spin-LED's for your initial measurements. As I indicated on the
phone, I do not think that these are particularly suitable for ultrafast
measurements, but you should be able to test everything out. If things
look promising, we can talk about designing an optimal structure.
As far as I am concerned, you should feel free to attempt any electrical
pump - optical probe or optical pump- electrical probe measurement with
these devices. As you are probably aware, I am avoiding virtually all
optical pump/ optical probe measurements out of a tacit agreement with
David. (The exception is one measurement that Scott Crooker is doing).
We have plenty of unbonded devices, and these are what I will send. They
are 300 micron diameter mesas, with a 150 micron gold pad deposited through
a shadow mask. The position and shape of the gold pad can be somewhat
irregular, but they have worked quite well. They will be annealed here at
250 C. You can raise the temperature to 150 - 170 C to In bond them to a
sample holder. The top contact will have to be wire-bonded. We will
prepare a packet with some characteristic J-V curves. Generally speaking,
if the J-V looks normal and it emits light, then it will work. They are
rather robust provided that the leads are not reversed. You can use 100 mA
with the Schottky reverse-biased and the p-n forward biased. A quick check
in perp. field is advisable. Also, be aware that the optimal conditions at
low temperature are strongly bias-dependent.
We will try to organize things on Thursday to send to you. Since we have
lots of unbonded devices. We will send you a few devices each from both QW
and bulk detectors.
-Paul
Paul Crowell
Associate Professor of Physics
University of Minnesota
School of Physics and Astronomy
116 Church St. SE
Minneapolis, MN 55455
Phone: 612-624-4828
Fax: 612-624-4578
crowell(a)physics.umn.edu
http://www.physics.umn.edu/groups/fastspin/
zum Thema Aufbau und Zusammensetzung bekannter und weniger geläufiger
chemischer bzw. kristallographischer Strukturen, z.B. Granat.
http://132.230.13.25/Vorlesung/Strukturtypen/alle.html
YIG hat übrigens doch nichts mit Silizium zu tun, obwohl Granat im
allgemeinen so etwas wie (A^2+_3) (B^3+_2) (Si_3) (O_12) ist.
Zur Info
Bernd
-------- Ursprüngliche Nachricht --------
Betreff: Workshop on "Solid State Based Quantum Information Processing"
Datum: Mon, 24 May 2004 15:10:52 +0200
Von: "Gross, Rudolf " <Rudolf.Gross(a)wmi.badw-muenchen.de>
An: "Aarts, Jan" <aarts(a)phys.leidenuniv.nl>, "Adrian, Hermann"
<hermann.adrian(a)uni-mainz.de>, "Ahn, Charles" <charles.ahn(a)yale.edu>,
"Aprili, Marco " <aprili(a)csnsm.in2p3.fr>, "Batlogg, Bertram"
<batlogg(a)solid.phys.ethz.ch>, "Bayreuther, Günther"
<Guenther.Bayreuther(a)physik.uni-regensburg.de>, "Berndt, Richard"
<berndt(a)physik.uni-kiel.de>, "Beschoten, Bernd "
<Bernd.Beschoten(a)physik.rwth-aachen.de>, "Blamire, Mark "
<mb52(a)cam.ac.uk>, "Blank, D.H.A." <d.h.a.blank(a)utwente.nl>, "Blatter,
G." <blatterj(a)itp.phys.ethz.ch>, "Boyen, Hans-Gerd"
<hans-gerd.boyen(a)physik.uni-ulm.de>, "Briegel, Hans "
<briegel(a)theorie.physik.uni-muenchen.de>, "Bruder, Christoph"
<christoph.bruder(a)unibas.ch>, "Büchner, Bernd"
<b.buechner(a)ifw-dresden.de>, "Char, Kookrin" <kchar(a)phya.snu.ac.kr>,
"Chesca, Boris" <boris.chesca(a)uni-tuebingen.de>, "Claeson, Tord"
<F4ATC(a)fy.chalmers.se>, "Clarke, John" <jclarke(a)physics.berkeley.edu>,
"Devoret, M." <devoret(a)drecam.saclay.cea.fr>, "Dressel, Martin"
<dressel(a)pi1.physik.uni-stuttgart.de>, "Eckern, Ulrich"
<ulrich.eckern(a)physik.uni-augsburg.de>, "Ensslin, Klaus"
<ensslin(a)solid.phys.ethz.ch>, "Fassbender, Jürgen "
<J.Fassbender(a)fz-rossendorf.de>, "Fert, Albert"
<albert.fert(a)thalesgroup.com>, "Fischer, Oystein "
<Oystein.Fischer(a)physics.unige.ch>, "Fontcuberta, Josep"
<fontcuberta(a)icmab.es>, "Freimuth, Axel " <freimuth(a)ph2.Uni-Koeln.DE>,
"Grundler, Dirk " <grundler(a)physnet.uni-hamburg.de>, "Güntherodt,
Gernot" <Gernot.Guentherodt(a)physik.rwth-aachen.de>, "Harmans, Kees"
<harmans(a)qt2.tn.tudelft.nl>, "Hillebrands, Burkhard"
<hilleb(a)physik.uni-kl.de>, "Hoenig, H.E." <hoenig(a)ipht-jena.de>
Dear colleague,
the Cooperative Research Center (SFB) 631 of the German Science
Foundation, which is a joint research effort on solid state based
quantum information processing of several research institutions in the
greater Munich area (see http://www.wmi.badw-muenchen.de/SFB631/)
is organizing an international workshop on
Solid State Based Quantum Information Processing
at Herrsching close to Munich from September 13 to 17, 2004.
The aim of the workshop is to promote an international discussion of the
progress in solid state based quantum information processing including
hardware concepts, theoretical foundations of solid state based qubits
as well as quantum information theory.
The format will be a two-day summer school (Tues. to Wed.) with 8 to 10 two-hour
tutorials given by internationally leading scientists and a two-day
workshop (Thurs. to Fri.) with invited and contributed talks as well as
poster sessions. The afternoon schedule of the workshop will be relaxed
to provide time for informal discussions.
For more information about the workshop, tentative list
of invited speakers, deadlines etc., please check the attached
flyer/poster and the workshop webpage
http://www.wmi.badw-muenchen.de/SFB631/QIP2004/
Please feel free to forward this message and the attached flyer/poster to
interested colleagues.
With best regards,
The members of SFB 631
-------------------------------------------------------------------------------
Prof. Dr. Rudolf Gross
Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften
und
Lehrstuhl E23, Technische Universitaet Muenchen
Walther-Meissner Str. 8, D-85748 Garching, Germany
Tel.: +49 -- (0)89 289 14201
Fax.: +49 -- (0)89 289 14206
E-mail: Rudolf.Gross(a)wmi.badw.de
http://www.wmi.badw.de
-------------------------------------------------------------------------------