WebJan 21, 2014 · The compound exhibited the synergy between a spin-crossover transition and a spin-Peierls-like singlet formation. The halogen-bond interactions between the iodine and the sulfur atoms stabilized the paramagnetic state of π-spins and played a crucial role in the synergistic magnetic transition between d- and π-spins. WebSpin Peierls transition (8). In such a theory the chains are thought to progressively tetramerize as the temperature is lowered, opening a BCS like gap (2A(T)) *) J is defined by the Hamiltonian II = 2J EiSiSi+ 1 . 47 in the magnetic excitation spectrum (9, 10). In this way an alternation of the exchange isobtained: J(T) = J (I + ~ (T~ and we ...
Spin-Peierls transition in low-dimensional quantum spin systems: …
Websignal is reduced and phosphorescence is generated. Spin-orbit coupling is a quantum mechanical process that is responsible for intersystem crossing. Intersystem crossing … WebJul 1, 1997 · Introduction Hase et al. [1] have discovered the spin-Peierls (SP) transition in CuGeO3, which is the first inorganic SP compound. After this discovery, the SP transi- tion … ski resorts with ikon pass
Simulations of Dynamical Electronic Vortices in Charge and Spin …
WebAbstract. Exact diagonalizations are done to calculate the energy gain from bond alternation in finite spin chains as a function of chain length. Calculations are done for S=1/2, 1, 3/2, and 2. Qualitative differences are found between half-integer and interger spins. Our results (i) indicate the absence of the spin-Peierls transition in ... Webcommon feature of the spin-Peierls transition in all the spin-Peierls compounds, is that some data indicate a BCS type mean field behavior of the thermodynamic quantities near the transition.13 For instance, a BCS type relationship14, ∆/kBTSP = 1.76, between the zero temperature spin gap and the spin Peierls transition temperature TSP has been WebFeb 7, 2024 · The spin-Peierls transition at T SP of spin-1 2 chains with isotropic exchange interactions has previously been modeled as correlated for T > T SP and mean field for T < T SP. We use correlated states throughout in the J 1 − J 2 model with antiferromagnetic exchange J 1 and J 2 = α J 1 between first and second neighbors, respectively, and ... swapp ai architecture