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Schwerpunktprogramm SPP 1285
Halbleiter Spintronik
Spintronik > Projekte > Projektansicht

Projekt

Ansprechpartner1
Dr. Dirk Reuter
Adresse1

Lehrstuhl für Angewandte Festkörperphysik
Fakultät für Physik und Astronomie der Ruhr-Universität Bochum
Universitätsstr. 150
D-44780 Bochum

Tel.:
Tel.:0234/3225864
Fax:
Fax:0234/3214380
email:
Ansprechpartner2
Prof. Dr. Andreas D. Wieck
Adresse2

Lehrstuhl für Angewandte Festkörperphysik
Fakultät für Physik und Astronomie der Ruhr-Universität Bochum
Universitätsstr. 150
D-44780 Bochum

Tel.:
Tel.:0234/3226726
Fax:
Fax:0234/3214380
email:
Projekttitel
Ferromagnetic GaN by focussed ion beam implanted rare earths
Projektbeschreibung

Spintronic is an intensively studied research field. Despite considerable progress in many subareas a lot of open questions remain. One hot topic is the search for material combinations that allow effective spin injection into a semiconductor or semiconductor heterostructure. A promising approach in this direction is the use of a ferromagnetic semiconductor as a spin injector. Recent research has shown that Gd doped GaN shows ferromagnetism at room temperature, which makes it a very interesting material for spintronic although the origin for the ferromagnetism on an atomic scale is still unknown. This project is dedicated to the investigation of the magnetic, optical and especially the electronic properties of implantation doped GaN and GaN-based heterostructures, respectively. Interesting lateral transport geometries, e. g, spin valve configurations, will be realized by focused ion beam implantation. The main focus is on the implantation of Gd, but other rare earth ions will be tested for their potential to create ferromagnetic nitrides.

Zurück

Wichtige Termine:


15. Sept. 2013:
Deadline für den Sonderband Semiconductor Spintronics (DFG-Abschlussbericht) in physica status solidi b
(nähere Informationen wurden per Email zugeschickt)


30. Sept. - 2. Okt. 2013:
Abschlusstreffen des Schwerpunktprogramms "International workshop on semiconductor spintronics" in der Residenz Würzburg
(nähere Informationen)

Aktuelle Veröffentlichung(en):

C. Drexler, S.A. Tarasenko, P. Olbrich, J. Karch, M. Hirmer, F. Müller, M. Gmitra, J. Fabian, R. Yakimova, S. Lara-Avila, S. Kubatkin, M. Wang, R. Vajtai, P. M. Ajayan, J. Kono, and S.D. Ganichev :  "Magnetic quantum ratchet effect in graphene" Nature Nanotechnology 8, 104 (2013)

J.H. Buß, J. Rudolph, S. Shvarkov, H. Hardtdegen, A.D. Wieck, and D. Hägele:  "Long electron spin coherence in ion‐implanted GaN: The role of localization" Appl. Phys. Lett. 102, 192102 (2013)

D.J. English, J. Hübner, P.S. Eldridge, D. Taylor, M. Henini, R.T. Harley, and M. Oestreich:  "Effect of symmetry reduction on the spin dynamics of (001)-oriented GaAs quantum wells" Phys. Rev. B 87, 075304 (2013)

V.L. Korenev, I.A. Akimov, S.V. Zaitsev, V.F. Sapega, L. Langer, D.R. Yakovlev, Yu. A. Danilov, and M. Bayer:  "Dynamic spin polarization by orientation-dependent separation in a ferromagnet–semiconductor hybrid" Nature Communications 3, 959 (2012)

M. Althammer, E.-M. Karrer-Müller, S.T.B. Goennenwein, M. Opel, R. Gross:  "Spin transport and spin dephasing in zinc oxide" Appl. Phys. Lett. 101, 082404 (2012)