Spin blockade in capacitively coupled quantum dots

We present transport measurements on a lateral double dot produced by combining local anodic oxidation and electron beam lithography. We investigate the tunability of our device and demonstrate that we can switch on and off tunnel coupling between both dots in addition to capacitive coupling. In the regime of pure capacitive coupling, we observe the phenomenon of spin blockade in a magnetic field and analyze the influence of capacitive interdot coupling on this effect.