Robert Zitzler
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View article: Phase Diagram of the Frustrated Hubbard Model
Phase Diagram of the Frustrated Hubbard Model Open
The Mott-Hubbard metal-insulator transition in the paramagnetic phase of the\none-band Hubbard model has long been used to describe similar features in real\nmaterials like V$_2$O$_3$. Here we show that this transition is hidden inside a\n…
View article: From Slater to Mott–Heisenberg physics: the antiferromagnetic phase of the Hubbard model
From Slater to Mott–Heisenberg physics: the antiferromagnetic phase of the Hubbard model Open
We study the optical conductivity of the one-band Hubbard model in the N\\'eel\nstate at half filling at T=0 using the dynamical mean-field theory. For small\nvalues of the Coulomb parameter clear signatures of a Slater insulator expected\…
View article: Kondo screening in<i>d</i>-wave superconductors in a Zeeman field and implications for STM spectra of Zn-doped cuprates
Kondo screening in<i>d</i>-wave superconductors in a Zeeman field and implications for STM spectra of Zn-doped cuprates Open
We consider the screening of an impurity moment in a d-wave superconductor\nunder the influence of a Zeeman magnetic field. Using the Numerical\nRenormalization Group technique, we investigate the resulting pseudogap Kondo\nproblem, in par…