51 citations · 53 across the 8 of their papers we have counts for
8 papers
Paradoxical Magnetic Cooling in a Structural Transition Model
Peter Borrmann, Heinrich Stamerjohanns, Eberhard R. Hilf +1
In contrast to the experimentally widely used isentropic demagnetization process for cooling to ultra-low temperatures we examine a particular classical model system that does not…
Calculation of thermodynamic properties of finite Bose-Einstein systems
Peter Borrmann, Jens Harting, Oliver Muelken +1
We derive an exact recursion formula for the calculation of thermodynamic functions of finite systems obeying Bose-Einstein statistics. The formula is applicable for canonical syst…
Thermodynamics of finite magnetic two-level systems
Peter Borrmann, Heinrich Stamerjohanns, Eberhard Hilf +3
We use Monte Carlo simulations to investigate the thermodynamical behaviour of aggregates consisting of few superparamagnetic particles in a colloidal suspension. The potential ene…
Simple Quantum Mechanical Phenomena and the Feynman Real Time Path Integral
A. Dullweber, E. R. Hilf, E. Mendel
The path integral formalism gives a very illustrative and intuitive understanding of quantum mechanics but due to its difficult sum over phases one usually prefers Schrödinger's ap…
Structures and Stabilities of H3+(H2)n Clusters (n=1-11)
B. Diekmann, P. Borrmann, E. R. Hilf
Geometries and energies for H3+(H2)n clusters (n = 0, ..., 11) have been calculated using standard "ab initio" methods. Up to clusters with n = 6, four different Pople basis sets (…
Magnetism of small transition metal clusters and the effects of isomerisation
Peter Borrmann, Bernd Diekmann, Eberhard R. Hilf +1
We investigate the magnetic properties of small transition metal clusters using a simple statistical model, which requires some input data from ab initio spin-density functional ca…