75 citations · 232 across the 6 of their papers we have counts for
6 papers
Projection operator approach to spin diffusion in the anisotropic Heisenberg chain at high temperatures
Robin Steinigeweg, Roman Schnalle
We investigate spin transport in the anisotropic Heisenberg chain in the limit of high temperatures (β \to 0). We particularly focus on diffusion and the quantitative evaluation of…
Heat capacity uncovers physics of a frustrated spin tube
N. B. Ivanov, J. Schnack, R. Schnalle +6
We report on refined experimental results concerning the low-temperature specific heat of the frustrated spin tube material [(CuCl2tachH)3Cl]Cl2. This substance turns out to be an…
Calculating the energy spectra of magnetic molecules: application of real- and spin-space symmetries
R. Schnalle, J. Schnack
The determination of the energy spectra of small spin systems as for instance given by magnetic molecules is a demanding numerical problem. In this work we review numerical approac…
Numerically exact and approximate determination of energy eigenvalues for antiferromagnetic molecules using irreducible tensor operators and general point-group symmetries
R. Schnalle, J. Schnack
Numerical exact diagonalization is the ultimate method of choice in order to discuss static, dynamic, and thermodynamic properties of quantum systems. In this article we consider H…
Frustration effects in antiferromagnetic molecules: the cuboctahedron
J. Schnack, R. Schnalle
Frustration of magnetic systems which is caused by competing interactions is the driving force of several unusual phenomena such as plateaus and jumps of the magnetization curve as…
Optimized perturbation theory for molecular antiferromagnets
R. Schnalle, J. Schnack
The energy spectra of mesoscopic, i.e. few-body quantum systems are of great interest in several areas of physics such as nuclear physics, cluster physics or magnetism. One way to…