527 citations · 6.4k across the 130 of their papers we have counts for
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Phases of three-dimensional -wave superconductors with two attractive interactions
Majid Kheirkhah, Igor F. Herbut
Three-dimensional -wave () superconducting state may result from Cooper pairing in channels with different angular momenta and spin, such as or . W…
Superconductivity in Luttinger semimetals near the SU(4) limit
Majid Kheirkhah, Igor F. Herbut
We consider the spin-3/2 Luttinger fermions with contact attraction near the SU(4)-symmetric limit of vanishing Luttinger spin-orbit-coupling parameter responsible for band inversi…
p-wave superconductivity in Luttinger semimetals
Julia M. Link, Igor F. Herbut
We consider the three-dimensional spin-orbit-coupled Luttinger semimetal of "spin" particles in presence of weak attractive interaction in the (p-wave) channel, and det…
p-wave superconductivity and the axi-planar phase of triple-point fermions
Subrata Mandal, Igor F. Herbut
We consider weak-coupling superconductivity in the inversion- and rotation-symmetric system of two pseudospin low-energy fermions of opposite chirality. General contact inter…
Time reversal symmetry breaking and -wave superconductivity of triple-point fermions
Subrata Mandal, Julia M. Link, Igor F. Herbut
We study the possibility of complex tensor (-wave) superconducting order in three-dimensional semimetals with chiral spin-1/2 triple-point fermions, which have an effective orbi…
Bogoliubov-Fermi surface with inversion symmetry and electron-electron interactions: relativistic analogies and lattice theory
Igor F. Herbut, Julia M. Link
We show that the general low-energy Bogoliubov-de Genness Hamiltonian in a multiband superconductor with broken time reversal and preserved inversion symmetry is a generator of rea…
Bogoliubov-Fermi Surfaces in Noncentrosymmetric Multicomponent Superconductors
Julia M. Link, Igor F. Herbut
We show that when the time reversal symmetry is broken in a multicomponent superconducting condensate without inversion symmetry the resulting Bogoliubov quasiparticles generically…
d-wave superconductivity and Bogoliubov-Fermi surfaces in Rarita-Schwinger-Weyl semimetals
Julia M. Link, Igor Boettcher, Igor F. Herbut
We uncover the properties of complex tensor (d-wave) superconducting order in three-dimensional Rarita-Schwinger-Weyl semimetals that host pseudospin-3/2 fermions at a fourfold lin…
Ground state of the three-dimensional BCS d-wave superconductor
Igor F. Herbut, Igor Boettcher, Subrata Mandal
We determine the mean-field ground state of the three-dimensional rotationally symmetric d-wave () superconductor at weak coupling. It is a non-inert state, invariant under…
Pairing symmetry and vortex zero-mode for superconducting Dirac fermions
Chi-Ken Lu, Igor F. Herbut
We study the vortex zero-energy bound states in presence of pairing among the low-energy Dirac fermions on the surface of a topological insulator. The pairing symmetries considered…
Restoration of the magnetic hc/e-periodicity in unconventional superconductors
Vladimir Juricic, Igor F. Herbut, Zlatko Tesanovic
We consider the energy of the filled quasiparticle's Fermi sea of a macroscopic superconducting ring threaded by an hc/2e-vortex, when the material of the ring is of an unconventio…
Excitons in QED3 and spin response in a phase-fluctuating d-wave superconductor
Babak H. Seradjeh, Igor F. Herbut
We study the particle-hole exciton mode in the QED3 theory of a phase-fluctuating d-wave superconductor in ladder approximation. We derive a Schroedinger-like equation for the exci…
Stable Skyrmions in spinor condensates
Igor F. Herbut, Masaki Oshikawa
Globally symmetric spinor condensates in free space are argued not to support stable topological defects in either two or three dimensions. In the latter case, however, we show tha…
Screening in anisotropic superfluids and the superfluid density in underdoped cuprates
Matthew J. Case, Igor F. Herbut
We examine the nature of the collective excitations in a strongly anisotropic system of bosons interacting via Coulomb interaction. Such a system has often been used in the past to…
Chiral symmetry breaking in in presence of irrelevant interactions: a renormalization group study
Kamran Kaveh, Igor F. Herbut
Motivated by recent theoretical approaches to high temperature superconductivity, we study dynamical mass generation in three dimensional quantum electrodynamics ) i…
Effective theory of high-temperature superconductors
Igor F. Herbut
General field theory of a fluctuating d-wave superconductor is constructed and proposed as an effective description of superconducting cuprates at low energies. The theory is used…
Quantum fluctuations, pseudogap, and the T=0 superfluid density in strongly correlated d-wave superconductors
Igor F. Herbut
I study the effect of Coulomb interaction on superconducting order in a d-wave lattice superconductor at T=0 by considering the superconducting saddle point in the two dimensional…
Finite temperature superfluid density in very underdoped cuprates
Igor F. Herbut, Matthew J. Case
The combination of a large superconducting gap, low transition temperature, and quasi two-dimensionality in strongly underdoped high temperature superconductors severely constrains…
Theory of strongly phase fluctuating d-wave superconductors and the spin response in underdoped cuprates
Igor F. Herbut
General theory of d-wave quasiparticles coupled to phase fluctuations of superconducting order parameter is discussed. In the charge sector the superfluid density is found to confo…
Theory of spin response in underdoped cuprates as strongly fluctuating d-wave superconductors
Igor F. Herbut, Dominic J. Lee
We study the spin dynamics in underdoped cuprates at low temperatures by considering them as quasi two dimensional d-wave superconductors (dSC) with strong phase fluctuations. An e…
Theory of phase fluctuating d-wave superconductors and the spin response in underdoped cuprates
Igor F. Herbut, Dominic J. Lee
The minimal theory of spin of gapless quasiparticles coupled to fluctuating vortex defects in the phase of the d-wave superconducting order parameter at T=0 is studied. With the pr…
QED_3 theory of underdoped high temperature superconductors II: the quantum critical point
Dominic J. Lee, Igor F. Herbut
We study the effect of gapless quasiparticles in a d-wave superconductor on the T=0 end point of the Kosterlitz-Thouless transition line in underdoped high-temperature superconduct…
Fine structure of chiral symmetry breaking in the theory of underdoped high- superconductors
Babak H. Seradjeh, Igor F. Herbut
We study the effects of the leading irrelevant perturbations on chiral symmetry breaking in the effective theory of d-wave superconductor-insulator transition in underdoped…
QED3 theory of underdoped high temperature superconductors
Igor F. Herbut
Low-energy theory of d-wave quasiparticles coupled to fluctuating vortex loops that describes the loss of phase coherence in a two dimensional d-wave superconductor at T=0 is deriv…