23 citations · 42 across the 3 of their papers we have counts for
9 papers
Index theoretic characterization of d-wave superconductors in the vortex state
Oskar Vafek, Ashot Melikyan
We employ index theoretic methods to study analytically the low energy spectrum of a lattice d-wave superconductor in the vortex lattice state. This allows us to compare singly qua…
Disorder induced non-Fermi liquid near a metal-superconductor quantum phase transition
Oskar Vafek, M. R. Beasley, Steven A. Kivelson
We study the flux-driven superconductor-metal transition in ultrasmall cylinders observed experimentally by Liu {\em et.al.}(Science 294, 2332 (2001)). Where , there is a…
Quantum criticality of d-wave quasiparticles and superconducting phase fluctuations
Oskar Vafek, Zlatko Tesanovic
We present finite temperature extension of the QED theory of underdoped cuprates. The theory describes nodal quasiparticles whose interactions with quantum proliferated vortex-…
Gauge invariant fermion propagator in QED3
M. Franz, Z. Tesanovic, O. Vafek
In a recent preprint [cond-mat/0204040] Khveshchenko questioned the validity of our computation of the gauge invariant fermion propagator in QED3, which we employed as an effective…
Relativity Restored: Dirac Anisotropy in QED
O. Vafek, Z. Tesanovic, M. Franz
We show that at long lengthscales and low energies and to leading order in 1/N expansion, the anisotropic QED in 2+1 dimensions renormalizes to an isotropic limit. Consequently, th…
QED3 theory of pairing pseudogap in cuprates: From d-wave superconductor to antiferromagnet via "algebraic" Fermi liquid
M. Franz, Z. Tesanovic, O. Vafek
High- cuprates differ from conventional superconductors in three crucial aspects: the superconducting state descends from a strongly correlated Mott-Hubbard insulator, the ord…