68 citations · 120 across the 3 of their papers we have counts for
3 papers
Measuring spin and charge correlations via tunneling-current conductance fluctuations
Kelly R. Patton, Hartmut Hafermann, Sergej Brener +2
Scanning tunneling miscoscopy is one of the most powerful spectroscopic tools for single-electron excitations. We show that the conductance fluctuations, or noise in the conductanc…
Superperturbation solver for quantum impurity models
Hartmut Hafermann, Christoph Jung, Sergey Brener +3
We present a very efficient solver for the general Anderson impurity problem. It is based on the perturbation around a solution obtained from exact diagonalization using a small nu…
Dual Fermion Approach to Susceptibility of Correlated Lattice Fermions
S. Brener, H. Hafermann, A. N. Rubtsov +2
In this paper, we show how the two-particle Green function (2PGF) can be obtained within the framework of the Dual Fermion approach. This facilitates the calculation of the suscept…