575 citations · 2.7k across the 54 of their papers we have counts for
54 papers
Engineering kekule superconductivity from layer-selective interactions in rhombohedral graphene
Hung Dinh Nguyen, Yafis Barlas
At weak coupling, finite-momentum superconductivity is typically associated with broken time-reversal or inversion symmetry of the Fermi surface. Here, we show that lattice-scale p…
Finite-momentum coupling of Higgs and Bardasis--Schrieffer modes in superconductors with competing pairing channels
Samuel Awelewa, Yafis Barlas, Maxim Dzero
In superconductors with competing pairing channels, two well defined excitations exist below the pair-breaking edge: the Higgs mode of the condensed -wave channel and the Bardas…
Quantum Geometry Induced Kekulé Superconductivity in Haldane phases
Yafis Barlas, Fan Zhang, Enrico Rossi
Chiral two-dimensional electron gases, which capture the electronic properties of graphene and rhombohedral graphene systems, exhibit singular momentum-space vortices and are susce…
Effects of Coupling Between Chiral Vibrations and Spins in Molecular Magnets
Aman Ullah, Sergey A. Varganov, Yafis Barlas
In single molecular magnets, chiral vibrations carrying vibrational angular momentum () emerge due to the splitting of a doubly degenerate vibrational mode. H…
Quarter Metal Superconductivity
Chiho Yoon, Tianyi Xu, Yafis Barlas +1
We investigate the recently discovered multiple superconducting states in rhombohedral graphene quarter metal. We demonstrate that one of these states features a single-spin, singl…
Superfluid weight cross-over and critical temperature enhancement in singular flat bands
Guodong Jiang, Päivi Törmä, Yafis Barlas
Non-analytic Bloch eigenstates at isolated band degeneracy points exhibit singular behavior in the quantum metric. Here, a description of superfluid weight for zero-energy flat ban…