94 citations · 131 across the 4 of their papers we have counts for
4 papers
Entanglement of Exact Excited Eigenstates of the Hubbard Model in Arbitrary Dimension
Oskar Vafek, Nicolas Regnault, B. Andrei Bernevig
We compute exactly the von Neumann entanglement entropy of the eta-pairing states - a large set of exact excited eigenstates of the Hubbard Hamiltonian. For the singlet eta-pairing…
Thermodynamic signature of a magnetic-field-driven phase transition within the superconducting state of an underdoped high-temperature superconductor
J. B. Kemper, O. Vafek, J. B. Betts +5
More than a quarter century after the discovery of the high temperature superconductor (HTS) YBaCuO (YBCO) studies continue to uncover complexity in its phase diagr…
Cyclotron resonance of single valley Dirac fermions in gapless HgTe quantum well
J. Ludwig, Yu. B. Vasilyev, N. N. Mikhailov +4
We report on Landau level spectroscopy studies of two HgTe quantum wells (QWs) near or at the critical well thickness, where the band gap vanishes. In magnetic fields up to =16T…
Universal thermal conductivity in the vortex state of cuprate superconductors
M. Franz, O. Vafek
We formulate an effective low energy theory for the fermionic excitations in d-wave superconductors in the presence of periodic vortex lattices. These can be modeled by an effectiv…