%0 Book Section %1 statphys23_0861 %A Kadau, D. %A Wolf, D.E. %B Abstract Book of the XXIII IUPAP International Conference on Statistical Physics %C Genova, Italy %D 2007 %E Pietronero, Luciano %E Loreto, Vittorio %E Zapperi, Stefano %K effect friction ising magnetocaloric model statphys23 topic-3 %T Magnetic contribution to friction %U http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=861 %X A new contribution to friction is predicted to occur in systems with magnetic correlations: Tangential relative motion of two Ising spin systems pumps energy into the magnetic degrees of freedom. This leads to a friction force proportional to the area of contact. The velocity and temperature dependence of this force are investigated. Magnetic friction is strongest near the critical temperature, below which the spin systems order spontaneously. Antiferromagnetic coupling leads to stronger friction than ferromagnetic coupling with the same exchange constant. The basic dissipation mechanism is explained. If the coupling of the spin system to the heat bath is weak, a surprising effect is observed in the ordered phase: The relative motion acts like a heat pump cooling the spins in the vicinity of the friction surface.

@incollection{statphys23_0861, abstract = {A new contribution to friction is predicted to occur in systems with magnetic correlations: Tangential relative motion of two Ising spin systems pumps energy into the magnetic degrees of freedom. This leads to a friction force proportional to the area of contact. The velocity and temperature dependence of this force are investigated. Magnetic friction is strongest near the critical temperature, below which the spin systems order spontaneously. Antiferromagnetic coupling leads to stronger friction than ferromagnetic coupling with the same exchange constant. The basic dissipation mechanism is explained. If the coupling of the spin system to the heat bath is weak, a surprising effect is observed in the ordered phase: The relative motion acts like a heat pump cooling the spins in the vicinity of the friction surface.}, added-at = {2007-06-20T10:16:09.000+0200}, address = {Genova, Italy}, author = {Kadau, D. and Wolf, D.E.}, biburl = {https://www.bibsonomy.org/bibtex/242704bb3cd625307080f7dba8565102a/statphys23}, booktitle = {Abstract Book of the XXIII IUPAP International Conference on Statistical Physics}, editor = {Pietronero, Luciano and Loreto, Vittorio and Zapperi, Stefano}, interhash = {428f20025c1feb8027baa9b83cc055f4}, intrahash = {42704bb3cd625307080f7dba8565102a}, keywords = {effect friction ising magnetocaloric model statphys23 topic-3}, month = {9-13 July}, timestamp = {2007-06-20T10:16:31.000+0200}, title = {Magnetic contribution to friction}, url = {http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=861}, year = 2007 }