title: Unconventional transport in the "hole" regime of a si double quantum dot.
abstract: Studies of electronic charge transport through semiconductor double quantum dots rely on a conventional "hole" model of transport in the three-electron regime. We show that experimental measurements of charge transport through a Si double quantum dot in this regime cannot be fully explained using the conventional picture. Using a Hartree-Fock (HF) formalism and relevant HF energy parameters extracted from transport data in the multiple-electron regime, we identify a novel spin-flip cotunneling process that lifts a singlet blockade.
authors.affiliation: Department of Physics, University of Wisconsin-Madison, 53706, USA.
authors.forename: Teck Seng
authors.initials: TS
authors.lastname: Koh
authors.forename: C B
authors.initials: CB
authors.lastname: Simmons
authors.forename: M A
authors.initials: MA
authors.lastname: Eriksson
authors.forename: S N
authors.initials: SN
authors.lastname: Coppersmith
authors.forename: Mark
authors.initials: M
authors.lastname: Friesen