Please use this identifier to cite or link to this item:
|Title:||Equilibrium susceptibilities of superparamagnets: Longitudinal and transverse, quantum and classical|
|Authors:||García-Palacios, J.L. |
|Citation:||García-Palacios, J.L., Gong, J.B., Luis, F. (2009). Equilibrium susceptibilities of superparamagnets: Longitudinal and transverse, quantum and classical. Journal of Physics Condensed Matter 21 (45) : -. ScholarBank@NUS Repository. https://doi.org/10.1088/0953-8984/21/45/456006|
|Abstract:||The equilibrium susceptibility of uniaxial paramagnets is studied in a unified framework which permits us to connect traditional results of the theory of quantum paramagnets, S = 1/2,1,3/2,⋯, with molecular magnetic clusters, S∼5,10,20 all the way up (S = 30,50,100,⋯,) to the theory of classical superparamagnets. This is done using standard tools of quantum statistical mechanics and linear-response theory (the Kubo correlator formalism). Several features of the temperature dependence of the susceptibility curves (crossovers, peaks, deviations from Curie law) are studied and their scalings with S identified and characterized. Both the longitudinal and transverse susceptibilities are discussed, as well as the response of the ensemble with anisotropy axes oriented at random. For the latter case a simple approximate formula is derived too, and its range of validity assessed, which could be used in the modelization of experiments. © 2009 IOP Publishing Ltd.|
|Source Title:||Journal of Physics Condensed Matter|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 17, 2018
WEB OF SCIENCETM
checked on Jul 9, 2018
checked on Jun 29, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.