5 citations · 13 across the 7 of their papers we have counts for
7 papers
Magnetic Structure of CoO
Ekkehard Krüger
The paper reports theoretical evidence that the multi-spin-axis magnetic structure proposed in 1964 by van Laar actually does exist in CoO. This tetragonal spin arrangement produce…
Nonadiabatic Atomic-like State Stabilizing Antiferromagnetism and Mott Insulation in MnO
Ekkehard Krüger
In this paper I report evidence that the antiferromagnetic and insulating ground state of MnO is caused by a nonadiabatic atomic-like motion as it is evidently the case in NiO. In…
Wannier states of fcc symmetry qualifying paramagnetic NiO to be a Mott insulator
Ekkehard Krüger
This letter extends my recent paper on antiferromagnetic NiO [Structural Distortion Stabilizing the Antiferromagnetic and Insulating Ground State of NiO, Symmetry 2020, 12(1), 56]…
Structural Distortion Stabilizing the Antiferromagnetic and Semiconducting Ground State of NiO
Ekkehard Krüger
We report evidence that the experimentally observed small deformation of antiferromagnetic NiO modifies the symmetry of the crystal in such a way that the antiferromagnetic state b…
Modified BCS mechanism of Cooper pair formation in narrow energy bands of special symmetry III. Physical interpretation
Ekkehard Krüger
In Part I of this paper a modified BCS mechanism of Cooper pair formation was proposed. The present Part III gives a physical interpretation of this mechanism in terms of spin-flip…
Modified BCS mechanism of Cooper pair formation in narrow energy bands of special symmetry II. Matthias rule reconsidered
Ekkehard Krüger
In part I of this paper a modified BCS mechanism of Cooper pair formation of electrons was proposed. This mechanism is connected with the existence of a narrow, roughly half-filled…