1.5k citations · 1.8k across the 4 of their papers we have counts for
4 papers
Kondo proximity effect: How does a metal penetrate into a Mott insulator?
R. W. Helmes, T. A. Costi, A. Rosch
We consider a heterostructure of a metal and a paramagnetic Mott insulator using an adaptation of dynamical mean field theory to describe inhomogeneous systems. The metal can penet…
Mott transition of fermionic atoms in a three-dimensional optical trap
R. W. Helmes, T. A. Costi, A. Rosch
We study theoretically the Mott metal-insulator transition for a system of fermionic atoms confined in a three-dimensional optical lattice and a harmonic trap. We describe an inhom…
The numerical renormalization group method for quantum impurity systems
Ralf Bulla, Theo Costi, Thomas Pruschke
In the beginning of the 1970's, Wilson developed the concept of a fully non-perturbative renormalization group transformation. Applied to the Kondo problem, this numerical renormal…
Universal dephasing rate due to diluted Kondo impurities
T. Micklitz, A. Altland, T. A. Costi +1
We calculate the dephasing rate due to magnetic impurities in a weakly disordered metal as measured in a weak localization experiment. If the density n_S of magnetic impurities is…