## Research

My main research area is condensed matter theory, where the aim is to characterise and understand the physical properties of materials consisting of enormously large numbers of interacting particles. Of particular interest are 'strongly-correlated' systems, in which the interactions between particles are simply too large to ignore or treat using mean-field approaches. One instead develops quantum many-body techniques to determine the underlying physical behaviour.

I have previously worked on understanding many-body effects on the nanoscale, as observed in the electronic conductance of single molecules, carbon nanotubes and other 'quantum dot' devices.

I have more recently been working on correlated electron behaviour in bulk materials such as heavy fermion compounds. I'm also interested in developing general theories for approximating many-body systems, and in numerical methods such as the Numerical Renormalization Group and Continuous-Time Quantum Monte Carlo.

I am also involved in several collaborations with other members of the Department, in a range of subject areas.

## Selected Publications

*Quantitative mass imaging of single biological macromolecules*

Science

**360**, 423 (2018)

*Structural principles that enable oligomeric small heat-shock protein paralogs to evolve distinct functions*

Science

**359**, 930 (2018)

*Common non-Fermi liquid phases in quantum impurity physics*

Phys. Rev. B.

**90**, 075150 (2014)

*Generalized Wilson chain for solving multichannel quantum impurity problems*

Phys. Rev. B.

**89**, 121105(R) (2014)

*Conductance fingerprint of Majorana fermions in the topological Kondo effect*

Phys. Rev. B.

**89**, 045143 (2014)

*Tunable Kondo Physics in a Carbon Nanotube Double Quantum Dot*

Phys. Rev. Lett.

**109**, 156804 (2012)

*Interplay between Kondo physics and spin-orbit coupling in carbon nanotube quantum dots*

Phys. Rev. B

**81**, 075437 (2010)

*Zero-bias conductance in carbon nanotube quantum dots*

Phys. Rev. Lett.

**100**, 086809 (2008)

*Quantum Phase Transition in Capacitively Coupled Double Quantum Dots*

Phys. Rev. Lett.

**94**, 186406 (2005).