The Experts below are selected from a list of 12 Experts worldwide ranked by ideXlab platform
Nuri Unal - One of the best experts on this subject based on the ideXlab platform.
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DUFFIN-KEMMER-PETIAU Equation, PROCA Equation AND Maxwells Equation IN 1+1 D
2005Co-Authors: Nuri UnalAbstract:We study the relation between the spin-1 sector of the Duffin-Kemmer-Petiau (DKP) Equation and Proca Equation in the 1+1 dimensional Riemann-Cartan (RC) spacetime and show that DKP Equation is equivalent to complex Proca Equa-tion. The massless particle limit of the Proca Equation gives the Maxwells Equation in 1+1 D RC spacetime. Concepts of Physics, Vol. II (2005) 27
J. F. Annett - One of the best experts on this subject based on the ideXlab platform.
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Andreev bound states in ferromagnet-superconductor nanostructures
2015Co-Authors: M. Krawiec, B. L. Gy€orffy, J. F. AnnettAbstract:We discuss the properties of a ferromagnet-superconductor heterostructure on the basis of a Hubbard model fea-turing exchange splitting in the ferromagnet and electron–electron attraction in the superconductor. We have solved the spin-polarized Hartree–Fock–Gorkov Equations together with the Maxwells Equation (Amperes law) fully self-con-sistently. We have found that a proximity effect––Fulde–Ferrell–Larkin–Ovchinnikov state is realized in such a hetero-structure. It manifests itself in an oscillatory behavior of the pairing amplitude in the ferromagnet and spontaneously generated spin-polarized current in the ground state. We argue that it is built up from the Andreev bound states, whose energy can be tuned by the exchange splitting and hence can coincide with the Fermi energy giving rise to a current carrying p-state. We also suggest experiments to verify these predictions
M. Krawiec - One of the best experts on this subject based on the ideXlab platform.
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Andreev bound states in ferromagnet-superconductor nanostructures
2015Co-Authors: M. Krawiec, B. L. Gy€orffy, J. F. AnnettAbstract:We discuss the properties of a ferromagnet-superconductor heterostructure on the basis of a Hubbard model fea-turing exchange splitting in the ferromagnet and electron–electron attraction in the superconductor. We have solved the spin-polarized Hartree–Fock–Gorkov Equations together with the Maxwells Equation (Amperes law) fully self-con-sistently. We have found that a proximity effect––Fulde–Ferrell–Larkin–Ovchinnikov state is realized in such a hetero-structure. It manifests itself in an oscillatory behavior of the pairing amplitude in the ferromagnet and spontaneously generated spin-polarized current in the ground state. We argue that it is built up from the Andreev bound states, whose energy can be tuned by the exchange splitting and hence can coincide with the Fermi energy giving rise to a current carrying p-state. We also suggest experiments to verify these predictions
Joachim Sch - One of the best experts on this subject based on the ideXlab platform.
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COMMUTING QUASIINTERPOLATION OPERATORS FOR MIXED FINITE ELEMENTS
2015Co-Authors: Joachim SchAbstract:Abstract Conforming nite elements for Hcurl and Hdiv spaces became a main research topics in numerical analysis The so called de Rham diagram relates the exact sequence of continuous spaces H Hcurl Hdiv L to their cor responding discrete counterparts Up to now only the local nodal interpolation operators and global Fortin operators have been known to fulll the commuting diagram property In this paper new quasilocal Clementtype operators satisfying the commuting diagram property are introduced The result in particular should help to generalize and simplify existing multigrid theories as well as a posteriori error estimates for Maxwells Equation
B. L. Gy€orffy - One of the best experts on this subject based on the ideXlab platform.
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Andreev bound states in ferromagnet-superconductor nanostructures
2015Co-Authors: M. Krawiec, B. L. Gy€orffy, J. F. AnnettAbstract:We discuss the properties of a ferromagnet-superconductor heterostructure on the basis of a Hubbard model fea-turing exchange splitting in the ferromagnet and electron–electron attraction in the superconductor. We have solved the spin-polarized Hartree–Fock–Gorkov Equations together with the Maxwells Equation (Amperes law) fully self-con-sistently. We have found that a proximity effect––Fulde–Ferrell–Larkin–Ovchinnikov state is realized in such a hetero-structure. It manifests itself in an oscillatory behavior of the pairing amplitude in the ferromagnet and spontaneously generated spin-polarized current in the ground state. We argue that it is built up from the Andreev bound states, whose energy can be tuned by the exchange splitting and hence can coincide with the Fermi energy giving rise to a current carrying p-state. We also suggest experiments to verify these predictions