Jan Zaanen

Band theory and Mott insulators: Hubbard<i>U</i>instead of Stoner<i>I</i>

We propose a form for the exchange-correlation potential in local-density band theory, appropriate for Mott insulators. The idea is to use the ``constrained-local-density-approx...

Density-functional calculation of the parameters in the Anderson model: Application to Mn in CdTe

We discuss methods for ab initio calculations of the parameters in the Anderson model. First, we present a very simple method for calculating the appropriate combination of hopp...

The electronic structure and superexchange interactions in transition-metal compounds

In this paper, we discuss the electronic structure of transition-metal compounds in light of a new theoretical approach using an Anderson impurity Hamiltonian. We arrive at conc...

The electronic structure and band gaps in transition metal compounds

What can be learned about highTc from local density theory?

Charged magnetic domain lines and the magnetism of high-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>T</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>oxides

The breakdown of the antiferromagnetism in the high-${T}_{c}$ oxides is studied taking into account the 3d charge fluctuations. We point out a tendency towards the formation of ...

From quantum matter to high-temperature superconductivity in copper oxides

Canonical perturbation theory and the two-band model for high-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>T</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>superconductors

We analyze in more detail a model which describes spins localized on the Cu sites and carriers of oxygen character which has been proposed for high-temperature superconducting o...

Mean-field theories of the two-band model and the magnetism in high-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>T</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>oxides

The antiferromagnetic ground state of a two-band model Hamiltonian which ) and O(2${p}_{x(y)}$) orbitals within a ${\mathrm{CuO}}_{2}$ plane, a common structural unit of high-${...