172 citations · 542 across the 14 of their papers we have counts for
14 papers
Bootstrapping Bloch bands
Serguei Tchoumakov, Serge Florens
Bootstrap methods, initially developed for solving statistical and quantum field theories, have recently been shown to capture the discrete spectrum of quantum mechanical problems,…
Three-dimensional chiral Veselago lensing
Serguei Tchoumakov, Jérôme Cayssol, Adolfo G. Grushin
The effect by which light focuses upon entering a medium with a negative refractive index, known as Veselago lensing, may enable optical imaging below the diffraction limit. Simila…
Conservation of chirality at a junction between two Weyl semimetals
Serguei Tchoumakov, Bogusz Bujnowski, Jonathan Noky +3
In Weyl semimetals the location of linear band crossings, the Weyl cones, is not bound to any high symmetry point of the Brillouin zone, unlike the Dirac nodes in graphene. This fl…
Guided accumulation of active particles by topological design of a second-order skin effect
Lucas S. Palacios, Serguei Tchoumakov, Maria Guix +3
Collective guidance of out-of-equilibrium systems without using external fields is a challenge of paramount importance in active matter, ranging from bacterial colonies to swarms o…
Impurities in 3D quadratic band-touching Luttinger semimetals : Friedel and RKKY oscillations
Louis J. Godbout, Serguei Tchoumakov, William Witczak-Krempa
We investigate the response of 3D Luttinger semimetals to localized charge and spin impurities as a function of doping. The strong spin-orbit coupling of these materials strongly i…
Interplay of Coulomb repulsion and spin-orbit coupling in superconducting 3D quadratic band touching Luttinger semimetals
Serguei Tchoumakov, Louis J. Godbout, William Witczak-Krempa
We investigate the superconductivity of 3D Luttinger semimetals, such as YPtBi, where Cooper pairs are constituted of spin-3/2 quasiparticles. Various pairing mechanisms have alrea…