6 papers
Quantum Hall States response to toroidal geometry deformation
Bruno Mera, José M. Mourão, João P. Nunes +1
In this paper, we apply techniques of geometric quantization to study the response of the integer and fractional quantum Hall effects to toroidal geometry deformation. The main met…
Observation of angular momentum transfer among crystal lattice modes
Olga Minakova, Carolina Paiva, Maximilian Frenzel +7
Transfer of energy and linear momentum between lattice vibrations via anharmonic coupling is an important concept in solid-state physics. However, it remains difficult to directly…
Geometrical Responses of Generalized Landau Levels: Structure Factor and the Quantized Hall Viscosity
Carolina Paiva, Jie Wang, Tomoki Ozawa +1
We present a new geometric characterization of generalized Landau levels (GLLs). The GLLs are a generalization of Landau levels to non-uniform Berry curvature, and are mathematical…
Shift and Polarization of Excitons from Quantum Geometry
Carolina Paiva, Tobias Holder, Roni Ilan
Despite a long history, certain aspects of excitons - the bound inter-band states which form when a valence band hole and a conduction band electron pair - have remained relatively…
Dynamically induced multiferroic polarization
Carolina Paiva, Michael Fechner, Dominik M. Juraschek
We describe a mechanism by which both ferroelectric polarization and magnetization can be created in nonpolar, nonmagnetic materials. Using a combination of phenomenological modeli…
Conductivity scaling and absence of localization in disordered nodal line semimetals
Carolina Paiva, Jan Behrends
Transport plays a key role in characterizing topological insulators and semimetals. Understanding the effect of disorder is crucial to assess the robustness of experimental signatu…