Pauli spin blockade
Spin selection rules can inhibit interdot charge transfer.
$$(1,1)_{T}\not\rightarrow(0,2)_{S}$$
Physical intuition
Spin selection rules can inhibit interdot charge transfer.
Deep dive: physical mechanism
Triplet states cannot enter a singlet-only charge configuration without mixing.
What is measured experimentally?
Current suppression or charge-sensor latching indicates blockade.
Assumptions, noise and limitations
Spin–orbit, hyperfine and valley mixing can lift blockade.
Research and simulation exercise
Build a five-state rate-equation model.
Connect the ideas
Explore the chapter overview, learning path, and references.