Multiple transitions of the spin configuration in quantum dots.
Single electron tunneling is studied in a many electron quantum dot in high magnetic fields. For such a system multiple transitions of the spin configuration are theoretically predicted. With a combination of spin blockade and Kondo effect we are able to detect five regions with different spin configurations. Transitions are induced with changing electron numbers.
Rogge
M C
MC
Institut für Festkörperphysik, Universität Hannover, Appelstrasse 2, D-30167 Hannover, Germany. rogge@nano.uni-hannover.de
Fühner
C
C
Haug
R J
RJ