6 papers
Strong photogalvanic effect in Weyl materials due to magnetic resonances
Vahid Hassanzade, Vladyslav Kozii
We study the photogalvanic effect in Weyl semimetals under a magnetic field, focusing on the shift current. Using the Kubo formalism for an ideal, clean Weyl node at zero temperatu…
Nonlinear Hall effect in topological Dirac semimetals in parallel magnetic field
Maxim Dzero, Maxim Khodas, Alex Levchenko +1
We compute the second-harmonic response of two-dimensional topological Dirac semimetals subjected to an external in-plane magnetic field. The quantum kinetic equation for the Wigne…
Robustness of the Kohn-Luttinger mechanism against symmetry breaking
Amir Dalal, Jonathan Ruhman, Vladyslav Kozii
We investigate how strongly broken spatial symmetries affect the Kohn--Luttinger (KL) mechanism, in which superconductivity emerges purely from repulsive interactions. While the or…
Nonunitary spin-triplet superconductors in Zeeman magnetic field
Wen Li, Vahid Hassanzade, Maxim Dzero +1
We study spin-triplet superconductivity with both unitary and nonunitary pairing in the presence of an external Zeeman magnetic field. Within a mean-field framework, we exactly dia…
Unveiling a Hidden Percolation Transition in Monitored Clifford Circuits: Inroads from ZX-Calculus
Einat Buznach, Debanjan Chowdhury, Jonathan Ruhman
We revisit the measurement-induced phase transition (MPT) in Clifford circuits, which are both classically simulable and exhibit critical behavior widely believed to be distinct fr…
Instability of the critical Ngai's coupling and two-boson mechanism in metals
Phu Nguyen, Vladyslav Kozii
We study the properties of a Fermi liquid coupled to a quantum critical boson via the two-boson interaction known as Ngai's coupling. We find that the original quantum critical poi…