5 papers
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…
The interplay between shell effects and electron correlations in quantum dots
Jens Harting, Oliver Muelken, Peter Borrmann
We use the Path Integral Monte Carlo method to investigate the interplay between shell effects and electron correlations in single quantum dots with up to 12 electrons. By use of a…
Classification of phase transitions in small systems
Peter Borrmann, Oliver Muelken, Jens Harting
We present a classification scheme for phase transitions in finite systems like atomic and molecular clusters based on the Lee-Yang zeros in the complex temperature plane. In the l…