Pauli spin blockade in cotunneling transport through a double quantum dot
arXiv:cond-mat/0509232 · doi:10.1103/PhysRevB.72.161305
Abstract
We study spin correlation in a double quantum dot containing a few electrons in each dot (around 10). Clear current rectification with negative differential conductance is observed in the cotunneling regime, which is well explained by a Pauli spin blockade. The current feature is discussed in connection with exchange singlet-triplet splitting based on two simple models, one of which takes coherent interdot coupling and the other incoherent interdot coupling into account.
11 pages, 4 figures