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2013 | 11 | 12 | 1629-1637
Tytuł artykułu

Classical spin dynamics of anisotropic Heisenberg dimmers

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In the present work we study the deterministic spin dynamics of two interacting anisotropic magnetic particles in the presence of an external magnetic field using the Landau-Lifshitz equation. The interaction between particles is through the exchange energy. We study both conservative and dissipative cases. In the first one, we characterize the dynamical behavior of the system by monitoring the Lyapunov exponents and bifurcation diagrams. In particular, we explore the dependence of the largest Lyapunov exponent respect to the magnitude of applied magnetic field and exchange constant. We find that the system presents multiple transitions between regular and chaotic behaviors. We show that the dynamical phases display a very complicated topology of intricately intermingled chaotic and regular regions. In the dissipative case, we calculate the final saturation states as a function of the magnitude of the applied magnetic field, exchange constant as well as the anisotropy constants.
Słowa kluczowe
Wydawca

Czasopismo
Rocznik
Tom
11
Numer
12
Strony
1629-1637
Opis fizyczny
Daty
wydano
2013-12-01
online
2013-12-20
Twórcy
autor
  • Departamento de Física y Matemática Aplicada, Universidad de Navarra, Pamplona, 31080, Spain
autor
  • Instituto de Alta Investigación, Universidad de Tarapacá, Arica, Casilla 7D, Chile
autor
  • Departamento de Física y Matemática Aplicada, Universidad de Navarra, Pamplona, 31080, Spain, hmancini@unav.es
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-013-0280-7
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