Raquel Queiroz presented the topology of stacking faults and partial lattice defects in the RQMP research seminar in Quebec. Watch the recorded talk.
We worked with Roni Ilan and collaborators to show how pseudomagnetic fields generate distinctive Landau-level and optical-conductivity signatures of overtilted type-II Weyl cones. The work is published in Journal of Physics: Condensed Matter.
We worked with Fakher Assaad and collaborators to test whether interactions can adiabatically connect free-fermion topological phases whose classification is reduced by correlations. Quantum Monte Carlo instead finds symmetry breaking or a first-order transition for the studied interaction. The work is published in Physical Review Research.
We worked with Shahal Ilani's group, together with Erez Berg, Yuval Oreg, Felix von Oppen, and Ady Stern, to reveal a cascade of phase transitions and Dirac revivals in magic-angle graphene. The work is published in Nature; read the ScienceDaily report.
Raquel was delighted to give an invited talk in the international workshop "Recent Developments on Multipole Moments in Quantum Systems" organized by Watanabe & Cho via Zoom. A remarkable list of speakers and participants and lively discussions - even in this new format!
We worked with Sebastian Huber's group and Andrei Bernevig to achieve the first experimental realization of fragile topology in an acoustic metamaterial. The work is published in Science; read the Phys.org report.
We worked with Leslie Schoop and collaborators to distinguish topological drumhead states from trivial floating surface bands in ZrSiTe and explain their hybridization through the Z2 modular arithmetic of nodal-line Berry phases. The work is published in Physical Review X.
We worked with the WASP laboratory and Jennifer Cano to show that partial dislocations and step edges can bind single helical modes in higher-order topological insulators even without weak topological indices. The work is published in Physical Review Letters.
We worked with Tobias Holder and the Ilani group to show that a weak magnetic field separates ballistic from hydrodynamic electron flow through the spatial profile of the transverse electric field. The work is published in Physical Review B.
We worked with Shahal Ilani's group to image Poiseuille flow of hydrodynamic electrons in graphene. The work is published in Nature; read the accompanying Nature News & Views.
Raquel received the the prize for outstanding achievements by the Feinberg graduate school of the Weizmann Institute of Science.