Pauli spin blockade in cotunneling transport through a double quantum dot

Details Pauli spin blockade in cotunneling transport through a double quantum dot Pauli spin blockade in cotunneling transport through a double quantum dot

2005-09-09

arxiv.org/abs/cond-mat/0509232v1

Phys. Rev. B 72(16), 161305(R) (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages, 4 figures

Scientific paper

10.1103/PhysRevB.72.161305

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.

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