4 papers
Strongly correlated multi-impurity models: The crossover from a single-impurity problem to lattice models
Fabian Eickhoff, Frithjof B. Anders
We present a mapping of correlated multi-impurity Anderson models to a cluster model coupled to a number of effective conduction bands capturing its essential low-energy physics. T…
Symmetric single-impurity Kondo model on a tight-binding chain: a comparison of analytical and numerical ground-state approaches
Gergely Barcza, Kevin Bauerbach, Fabian Eickhoff +3
We analyze the ground-state energy, local spin correlation, impurity spin polarization, impurity-induced magnetization, and corresponding zero-field susceptibilities of the symmetr…
Inelastic electron tunneling spectroscopy for probing strongly correlated many-body systems by scanning tunneling microscopy
Fabian Eickhoff, Elena Kolodzeiski, Taner Esat +7
We present an extension of the tunneling theory for scanning tunneling microcopy (STM) to include different types of vibrational-electronic couplings responsible for inelastic cont…
Effective low-energy description of the two impurity Anderson model: RKKY interaction and quantum criticality
Fabian Eickhoff, Benedikt Lechtenberg, Frithjof B. Anders
We show that the RKKY interaction in the two-impurity Anderson model comprise two contributions: a ferromagnetic part stemming from the symmetrized hybridization functions and an a…