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on recent experimental studies and band structure calculations. Superconducting pairing mediated by the exchange interaction in the model is investigated as a function of doping away from ...
Abstract:In this report we review the method of explicit calculations of interatomic exchange interactions of magnetic materials. This involves exchange mechanisms normally referred to as Heisenberg ...
Microscopic mechanisms responsible for the observed pressure dependencies of the Neel temperature TN and parameters of isotropic and anisotropic exchange interaction in the orthorhombic ...
and of Eliashberg theory for anisotropic singlet and triplet superconducting order. The effective interaction kernel incorporates exchange of spin fluctuations carried by strongly renormalized particle‐hole ...
of the Eli- phonon-mediated interaction , exchange of paramagnons, ashberg equations, generalized for an interaction or some other Coulomb interaction , described for example D (k, k', io~- ira') with a strong k ...
some crucial experiments that place essential constraints on the pairing mechanism of high-temperature superconductivity . The observed unconventional oxygen-isotope effects in cuprates have clearly shown ...
THE mechanism of superconductivity in the recently discovered layered copper oxide compounds1 is still unknown. In the conventional theory, electron pairing mediated by the exchange of low-energy ...
. This decoupling procedure leads to the appearance of new terms such as a pair- exchange potential, anisotropic Kondo-lattice terms, and a density-dependent hybridization. The final Hamiltonian describes ...
that the complicated magnetic phase diagram originates from a delicate competition between neighboring exchange interactions between the Mn-ions. At all pressures, the electronic structures indicate the existence ...
interaction which is a relativistic effect. In the opposite limit of a high drift velocity the interaction of charges at large distances has the character of the exchange of plasmons. The potential of pair ...
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