Spin-Lattice Relaxation in Metal-Organic Platinum(II) Complexes
Herbert H. H. Homeier, Johann Strasser, Hartmut Yersin
Abstract
The dynamics of spin-lattice relaxation (slr) of metal-organic Pt(II) compounds is studied. Often, such systems are characterized by pronounced zero-field splittings (zfs) of the lowest-lying triplets. Previous expressions for the Orbach slr process do not allow to treat such splitting patterns properly. We discuss the behavior of a modified Orbach expression for a model system and present results of a fit of the temperature dependence of the spin-lattice relaxation rate of Pt(2-thpy)2 based on the modified expression.
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