This is the research webpage of the theoretical nanoelectronics group at University College Dublin led by Dr Andrew Mitchell in the School of Physics.
We have new openings in the group for PhD students -- contact Andrew Mitchell to apply for a fully funded position!
Breaking News! Research on single-molecule transistors to be published in Nature Comms.
When nanoscale components are incorporated into electronic circuits, the laws of quantum mechanics govern their basic properties. Striking phenomena such as entanglement and quantum interference can appear, and have no classical analogue. The next generation of miniaturized electronics will overcome the limitations of traditional design paradigms by exploiting the novel functionality of the nano.
In the theoretical nanoelectronics group at UCD we develop and apply state-of-the-art theoretical and computational techniques, working closely with experimental collaborators to study and direct development of new nanoelectronic devices. We are currently working on two key areas of emerging potential.
First, we explore the rich physics of recently developed 'charge-Kondo' semiconductor quantum dot devices. Such devices represent a new paradigm for designer nanophysics, providing a route engineer previously elusive states through quantum simulation of abstract models.
Secondly, we study single molecule junctions, where new possibilities arise from the complex interplay between quantum interference due to competing electron transport pathways, and the Kondo effect due to entanglement from strong electronic interactions. Our aim here is to treat strong interactions and quantum interference on an equal footing, to address the challenge of how to harness the robust and reproducible chemical complexity provided by nature in single molecule devices.
For a detailed description of our research interests and projects, see the 'Research' page.
For a full list of our publications, see the 'Publications' page.
Quantum interference and Kondo Blockade in molecular electronics : Nature Communications (in press)
Kitaev spin liquid with Kondo impurities: Phys. Rev. Lett. 117, 037202 (2016)
Charge Kondo devices hosting Majoranas: Phys. Rev. Lett. 116, 157202 (2016) -- Editor's Suggestion
Multi-band quantum impurity solver: Phys. Rev. B 93, 235101 (2016)
Signatures of Weyl semimetals in quasiparticle interference: Phys. Rev. B 93, 035137 (2016)
Publications from 2015:
Kondo effect in Dirac and Weyl systems: Phys. Rev. B 92, 121109(R) (2015) -- Rapid Communication
Magnetic nanostructures: Phys. Rev. B 92, 155104 (2015)
DMFT for nanostructures: Phys. Rev. B 92, 155101 (2015) -- Editor's Suggestion
Magnetic impurities on surfaces: Phys. Rev. B 91, 235127 (2015)
Quasiparticle interference: Phys. Rev. B 92, 035126 (2015)