Assistant professor
Paris-Saclay University

Biography

I am an assistant professor in the Theory group of the Laboratory of Solid State Physics of the University Paris-Saclay. My main research interests are topological states of matter, strongly correlated electron systems, and ab-initio theories of condensed matter.

Interests

  • Topological states of matter
  • Strongly correlated electron systems
  • Ab-initio theories of condensed matter

Education

  • PhD in Physics, University of Cambridge (2016)

Black hole analogues

We study low-dimensional electronic models which mimic some of the properties of black holes. We designed a lattice model in which electrons behave the same way as relativistic particles near a gravitational horizon.

Publications

A. G. Moghaddam, D. Chernyavsky, C. Morice, J. van Wezel, and J. van den Brink, arXiv:2104.13360.
C. Morice, A. G. Moghaddam, D. Chernyavsky, J. van Wezel, and J. van den Brink, Phys. Rev. Res. Lett. 3, L022022 (2021).


Finite-size topological insulators

We investigate the influence of finite thickness on properties of topological insulators.

We studied a minimal model for topological insulators in a slab geometry. One parameter of our model, namely the Dirac velocity perpendicular to the slab, distinguishes between two qualitatively distinct situations: when it is zero, we find that the topological invariants of the 3D system can be entirely deduced from properties of the slab. However when it is not zero, a new phase arises, with surface states but without band inversion. We also investigated this model for large dispersions perpendicularly to the slab and unveiled a regime where the slab displays non-trivial topological invariants but nonetheless extrapolates towards a trivial 3D state.

The new phase which displays surface states without band inversion is localised close to topological phase transitions. We therefore studied ZrTe5, which was shown to be a strong topological insulator, on the border of a weak topological insulating phase. We derived a model for this material fitted to ab-initio calculations and showed that it matches many experimental signatures, including optical, transport, and spectroscopic results.

Publications

C. Morice, E. Lettl, T. Kopp, and A. P. Kampf, Phys. Rev. B 102, 155138 (2020).
C. Morice, T. Kopp, and A. P. Kampf, Phys. Rev. B 100, 235427 (2019).


Collaborations with experimentalists

I collaborate with experimental teams performing optical measurements on very diverse materials, such as compounds exhibiting charge density wave phases. Using density functional theory (DFT), time-dependent density functional theory (TDDFT), and analytical calculations, we calculate observables which enhance our understanding of the measured physics.

Publication

X.Feng, J. Henke, C. Morice, C. J. Sayers, E. Da Como, J. van Wezel and E. van Heumen, Phys. Rev. B 104, 165134 (2021).

Statistical Physics — Exercises

Exercise classes for the Statistical Physics course of the 3rd year of the Fundamental Physics bachelor in the University Paris-Saclay.

Contact

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Contact

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