131 citations · 358 across the 14 of their papers we have counts for
14 papers
Deceptive signals of phase transitions in small magnetic clusters
Heinrich Stamerjohanns, Oliver Muelken, Peter Borrmann
We present an analysis of the thermodynamic properties of small transition metal clusters and show how the commonly used indicators of phase transitions like peaks in the specific…
The Origins of Phase Transitions in Small Systems
Oliver Muelken, Heinrich Stamerjohanns, Peter Borrmann
The identification and classification of phases in small systems, e.g. nuclei, social and financial networks, clusters, and biological systems, where the traditional definitions of…
Classification of the Nuclear Multifragmentation Phase Transition
Oliver Muelken, Peter Borrmann
Using a recently proposed classification scheme for phase transitions in finite systems [Phys.Rev.Lett.{\bf 84},3511 (2000)] we show that within the statistical standard model of n…
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…
Order-disorder transition in nanoscopic semiconductor quantum rings
Peter Borrmann, Jens Harting
Using the path integral Monte Carlo technique we show that semiconductor quantum rings with up to six electrons exhibit a temperature, ring diameter, and particle number dependent…
Classification of phase transitions of finite Bose-Einstein condensates in power law traps by Fisher zeros
Oliver Muelken, Peter Borrmann, Jens Harting +1
We present a detailed description of a classification scheme for phase transitions in finite systems based on the distribution of Fisher zeros of the canonical partition function i…