Regensburg 2013 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
TT: Fachverband Tiefe Temperaturen
TT 68: Transport: Spintronics, Magnetotransport 2 (jointly with HL and MA)
TT 68.4: Vortrag
Freitag, 15. März 2013, 10:15–10:30, H20
Electronic Structure and Magnetic Properties of Sc doped EuO Thin Films — •Andreas Reisner1, Simone Altendorf1, Chun-Fu Chang1, Hong-Ji Lin2, Chien-Te Chen2, and Liu Hao Tjeng1 — 1Max-Planck-Institute for Chemical Physics of Solids, Nöthnitzer Str.40, 01187 Dresden, Germany — 2National Synchrotron Radiation Research Center, Hsin-Ann Road, 30076 Hsinchu, Taiwan, R.O.C.
Europium monoxide is a ferromagnetic semiconductor with a Curie temperature TC of 69 K. Upon doping the material can show an increase of the Curie temperature, a metal-to-insulator transition and a high spin polarization of the charge carriers. Applying pressure can also enhance TC. Mostly other trivalent rare earth metals are used as dopant. Here we set out to explore the possibility of using transition metals as dopants. As a start we focus on the non magnetic Sc ions. We are able to achieve excellent crystalline growth of Sc-doped EuO thin films on YSZ (001) substrates using molecular beam epitaxy. We will report our results on the crystal structure as characterized by RHEED and LEED, the electronic structure as determined by XPS and ARPES, and on the magnetic propertes as measured by SQUID.