A theoretical study on magneto structural correlation for binuclear Cu(Ⅱ) complexes bridged by single N-N group from diazine has been investigated by using broken symmetry approach within the framework of density functional theory.

Computational Quantum Chemical Investigation on Heterospin System Consisting of Metal(Ⅱ) Ion and Aminoxyl Radicals by Using Broken Symmetry Approach and Density Functional Theory;

Calculations on the magnetic coupling interaction in the mixed bridged trinuclear nickel complexes with triazole and isothiocyanate bridge ligands have been carried out by using the density functional theory combined with the broken symmetry approach (DFT-BS).

The magnetic coupling mechanism of extendedly bridged dimers such as oxalato- and oxamido- bridged Cu(Ⅱ)dimers have been investigated by using the density functional theory and the broken symmetry approach.

On the basis of the broken symmetry approach and density functional theory (DFT), the magnetostructural characterization of cyanato-bridged Cu (Ⅱ) dimers in EO coordination mode has been studied.

On basis of the broken symmetry approach and density functional theory (DFT), the magnetostructural characterization of azido-bridged Cu (Ⅱ) dimers is studied which have end-to-end (EE) and end-on (EO) two main coordination modes.

We calculate and discuss the threshold voltage u_(th) and the parameter Δ which reflects the symmetry breaking of the director distribution at the middle layer of the cell.

But symmetry breaking,as the assistant design principles of the universe,is an indirect form of the implicit symmetry.

Besides,it was demonstrated that the(3,9+2)-circle and(9+2,3)-circle fractal sets are golden ones with symmetry breaking.

In this paper we discuss the classification and characteristics of symmetry in physics,analyze in detail the connection between broken symmetry and phase transition as a process from disorder to order in physical systems,and discuss the prerequisite conditions to the appearance of broken symmetry.