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7 papers · 1 filter
Ferromagnetic Resonance Linewidths in Ultrathin Structures: Theoretical Studies of Spin Pumping
A. T. Costa, R. B. Muniz, D. L. Mills
We present theoretical studies of the spin pumping contribution to the ferromagnetic resonance linewidth for various ultrathin film ferromagnetic structures. We consider the isolat…
High-temperature series expansion of the Helmholtz free energy of the quantum spin-S XYZ chain
Onofre Rojas, S. M. de Souza, E. V. Corrêa Silva +1
We consider the chain model of arbitrary spin in the high temperature region, with external magnetic field and single-ion anisotropy term. Our high-temperature expansion…
Estudo e Implementacao de Algoritmos de Roteamento sobre Grafos em um Sistema de Informacoes Geograficas
Rudini M. Sampaio, Horacio H. Yanasse
This article presents an implementation of a graphical software with various algorithms in Operations research, like minimum path, minimum tree, chinese postman problem and travell…
Thermodynamics of the quantum spin-S XXZ chain
Onofre Rojas, S. M. de Souza, E. V. Correa Silva +1
The thermodynamics of the spin- anisotropic quantum chain with arbitrary value of and unitary norm, in the high-temperature regime, is reported. The single-ion anisotr…
Entanglement of Two Impurities through Electron Scattering
A. T. Costa, S. Bose, Y. Omar
We study how two magnetic impurities embedded in a solid can be entangled by an injected electron scattering between them and by subsequent measurement of the electron's state. We…
Indirect exchange coupling between magnetic adatoms in carbon nanotubes
A. T. Costa, D. F. Kirwan, M. S. Ferreira
The long range character of the exchange coupling between localized magnetic moments indirectly mediated by the conduction electrons of metallic hosts can play a significant role i…