Non-linear excitations in Ising-type magnetic chain systems I: Mossbauer relaxation studies of antiferromagnets in zero and applied field

Quantum Matter and Optic

Field-dependent Mossbauer relaxation study of domain walls in the quasi 1-d antiferromagnet RbFeCl3.2H2O

Quantum Matter and Optic

Mössbuaer relaxation studies of non-linear dynamical excitations in low-dimensional magnets

Quantum Matter and Optic

Electronic structure and bonding of the metal cluster compound Au55(PPh3)12Cl6

We discuss the electronic structure, bonding and physical properties of the gold cluster compound Au55(PPh3)12Cl6. Results from our experimental measurements, including EXAFS, specific heat, Mossbauer, UV-visible and photoelectron spectroscopy, are combined with those of other work to form a consistent physical picture of the system. The bonding in Au55(PPh3)12Cl6 is much more delocalised and non-directional than in smaller gold cluster molecules. The Au55 cluster exhibits a substantial degree of metallic bonding, while displaying some of the characteristics of a discrete energy level spectrum