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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 34: Colloids and Complex Liquids II

CPP 34.12: Vortrag

Donnerstag, 29. März 2012, 18:15–18:30, C 130

Magnetic nanorods: A Monte Carlo study — •Carlos E. Alvarez and Sabine H. L. Klapp — Institut für Theoretische Physik, TechnischeUniversität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany

We perform Monte Carlo simulations of model stiff magnetic nanorods composed of several magnetic hard spheres. We study the thermodynamic properties as well as the structure formation and percolation properties of the system with and without an applied external magnetic field for various densities and temperatures. We measure a critical path approximation for the conductance of the system [1] and observe how it is affected by the length of the rods, the temperature of the system and the presence and strength of an applied external field. We also look at dipolar prolate spheroids [2] as models for magnetic nanorods and compare the results with the multi-sphere rod model.
[1] G. Ambrosetti, C. Grimaldi, I. Balberg, T. Maeder, A. Danani and P. Ryser, Phys. Rev. B, 81, 155434 (2010).
[2] G. J. Zarragoicoechea, J.-J Weis and D. Levesque, Mol. Phys., 74, 629 (1991).