SU(4) Fermi Liquid State and Spin Filtering in a Double Quantum Dot System
SU(4) Fermi Liquid State and Spin Filtering in a Double Quantum Dot System
We study a symmetrical double quantum dot (DD) system with strong capacitive interdot coupling using renormalization group methods. The dots are attached to separate leads, and there can be a weak tunneling between them. In the regime where there is a single electron on the DD the low-energy behavior is …