53 citations · 133 across the 12 of their papers we have counts for
8 papers · 1 filter
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…
A theory of criticality for quantum ferroelectric metals
Avraham Klein, Vladyslav Kozii, Jonathan Ruhman +1
A variety of compounds, for example doped paraelectrics and polar metals, exhibit both ferroelectricity and correlated electronic phenomena such as low-density superconductivity an…
Spin-triplet superconductivity from inter-valley Goldstone modes in magic-angle graphene
Vladyslav Kozii, Michael P. Zaletel, Nick Bultinck
We consider magic-angle graphene in the doping regime around charge neutrality and study the connection between a recently proposed inter-valley coherent insulator at zero doping a…
Interactions remove the quantization of the chiral photocurrent at Weyl points
Alexander Avdoshkin, Vladyslav Kozii, Joel E. Moore
The chiral photocurrent or circular photogalvanic effect (CPGE) is a photocurrent that depends on the sense of circular polarization. In a disorder-free, noninteracting chiral Weyl…
Thermoelectric Hall conductivity and figure of merit in Dirac/Weyl materials
Vladyslav Kozii, Brian Skinner, Liang Fu
We calculate the thermoelectric response coefficients of three-dimensional Dirac or Weyl semimetals as a function of magnetic field, temperature, and Fermi energy. We focus in part…
Thermal plasmon resonantly enhances electron scattering in Dirac/Weyl semimetals
Vladyslav Kozii, Liang Fu
We study the inelastic scattering rate due to the Coulomb interaction in three-dimensional Dirac/Weyl semimetals at finite temperature. We show that the perturbation theory diverge…