A collection of 24 hexacoordinate Co(II) complexes was investigated by ab initio CASSCF + NEVPT2 SOC calculations. In addition to the energies spin–orbit multiplets (Kramers doublets, KD) their composition spins is also analyzed, along with projection norm effective Hamiltonian. The latter served as evaluation axial and rhombic zero-field splitting parameters g-tensor components. fulfilment spi...

Photon splitting in a very strong magnetic field is analyzed for energy ω < 2m. The amplitude obtained on the base of operator-diagram technique is used. It is shown that in a magnetic field much higher than critical one the splitting amplitude is independent on the field. Our calculation is in a good agreement with previous results of Adler and in a strong contradiction with recent paper of Me...

In lateral quantum dots, the combined effect of both Dresselhaus and Bychkov-Rashba spin-orbit coupling is equivalent to an effective magnetic field +/- B(SO) which has the opposite sign for s(z)= +/- 1/2 spin electrons. When the external magnetic field is perpendicular to the planar structure, the field B(SO) generates an additional splitting for electron states as compared to the spin splitti...

Information on the energy of 5d levels of Ce in chloride, bromide, and iodide compounds has been collected. From this, values for the centroid shift and the crystal field splitting of the 5d configuration are obtained. The centroid shift will be related to the polarizability of the anions and further analyzed by means of the ligand polarization model. The crystal field splitting is to a large e...

We study the interplay of crystal field splitting and Hund coupling in a two-orbital model which captures the essential physics of systems with two electrons or holes in the e(g) shell. We use single site dynamical mean field theory with a recently developed impurity solver, which is able to access strong couplings and low temperatures. The fillings of the orbitals and the location of phase bou...

For a computable field F , the splitting set SF of F is the set of polynomials with coefficients in F which factor over F , and the root set RF of F is the set of polynomials with coefficients in F which have a root in F . Results of Frohlich and Shepherdson in [3] imply that for a computable field F , the splitting set SF and the root set RF are Turing-equivalent. Much more recently, in [6], M...

We report a giant thermal shift of 2.1 MHz/K related to the excited-state zero-field splitting in the silicon vacancy centers in 4H silicon carbide. It is obtained from the indirect observation of the optically detected magnetic resonance in the excited state using the ground state as an ancilla. Alternatively, relative variations of the zero-field splitting for small temperature differences ca...