Vanadyl dithiolate single molecule transistors: the next spintronic frontier?

Kondo effect in single-molecule spintronic devices

We study the Kondo effect in a quantum dot or a single molecule coupled to ferromagnetic leads. Spin-dependent quantum charge fluctuations in the dot induce the lifting of the spin degeneracy of the dot. It leads to the dot’s level spin splitting observed in the nonequilibrium transport as a splitting of a zero-bias anomaly in the differential conductance. We discuss basic properties of this ef...

Graphene-porphyrin single-molecule transistors.

We demonstrate a robust graphene-molecule-graphene transistor architecture. We observe remarkably reproducible single electron charging, which we attribute to insensitivity of the molecular junction to the atomic configuration of the graphene electrodes. The stability of the graphene electrodes allow for high-bias transport spectroscopy and the observation of multiple redox states at room-tempe...

Supplementary Information: Graphene-porphyrin single-molecule transistors

Electronic transport in benzodifuran single-molecule transistors.

Benzodifuran (BDF) single-molecule transistors have been fabricated in electromigration break junctions for electronic measurements. The inelastic electron tunneling spectrum validates that the BDF molecule is the pathway of charge transport. The gating effect is analyzed in the framework of a single-level tunneling model combined with transition voltage spectroscopy (TVS). The analysis reveals...

Reliability: the next frontier

The goal of my graduate research has been finding architectural solutions to key technological challenges facing processor design that impact reliability, power, and performance of multicores. The rapidly shrinking feature sizes provided by the Moore’s Law with each successive technology generation make the devices on a chip increasingly susceptible to soft errors, hard errors, process variatio...