352 citations · 3.4k across the 93 of their papers we have counts for
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Strong Coulomb effects in hole-doped Heisenberg chains
J. Schnack
Substances such as the ``telephone number compound'' Sr14Cu24O41 are intrinsically hole-doped. The involved interplay of spin and charge dynamics is a challenge for theory. In this…
Solitary waves on finite-size antiferromagnetic quantum Heisenberg spin rings
J. Schnack, P. Shchelokovskyy
Motivated by the successful synthesis of several molecular quantum spin rings we are investigating whether such systems can host magnetic solitary waves. The small size of these sp…
Exact diagonalization studies of doped Heisenberg spin rings
J. Schnack, F. Ouchni
Motivated by magnetization studies of the "telephon number compound" Sr_14Cu_24O_41 we investigate doped Heisenberg spin rings by means of complete numerical diagonalization of a H…
Competing Spin Phases in Geometrically Frustrated Magnetic Molecules
C. Schroeder, H. Nojiri, J. Schnack +3
We have found a class of zero-dimensional geometrically frustrated Heisenberg spin systems exhibiting anomalous behavior in an external magnetic field B similar to that occuring in…
Exchange interactions and magnetic anisotropy in the "Ni_4" magnetic molecule
A. V. Postnikov, M. Brueger, J. Schnack
Magnetic properties of a tetrahedral "Ni_4" molecule are discussed in terms of the Heisenberg model, with magnetic anisotropy terms included, and on the basis of first-principle ca…
Magnetic characterization of the frustrated three-leg ladder compound [(CuCl2tachH)3Cl]Cl2
J. Schnack, Hiroyuki Nojiri, P. Koegerler +2
We report the magnetic features of a new one-dimensional stack of antiferromagnetically coupled equilateral copper(II) triangles. High-field magnetization measurements show that th…