Chaotic dynamics and spin correlation functions in a chain of nanomagnets

  title={Chaotic dynamics and spin correlation functions in a chain of nanomagnets},
  author={Levan Chotorlishvili and Z. Toklikishvili and Andreas Komnik and Jamal Berakdar},
  journal={Physical Review B},
We study a chain of coupled nanomagnets in a classical approximation. We show that the infinitely long chain of coupled nanomagnets can be equivalently mapped onto an effective one-dimensional Hamiltonian with a fictitious time-dependent perturbation. We establish a connection between the dynamical characteristics of the classical system and spin correlation time. The decay rate for the spin correlation functions turns out to depend logarithmically on the maximal Lyapunov exponent. Furthermore… 
3 Citations

Figures from this paper

Chaotic spin-dependent electron dynamics in a field-driven double dot potential
Abstract We study the nonlinear classical dynamics of an electron confined in a double-well potential and subjected to a spin–orbit coupling as well as a constant external magnetic field. It is shown
Inverse Landau-Zener-Stückelberg problem for qubit-resonator systems
We consider theoretically a superconducting qubit - nanomechanical resonator (NR) system, which was realized by LaHaye et al. [Nature 459, 960 (2009)]. First, we study the problem where the state of


Quantum tunneling of magnetization - QTM '94
Preface. I: General Introduction. Macroscopic Quantum Effects in Magnetic Systems: An Overview A.J. Leggett. II: Particles (Theory). Theory of Mesoscopic Quantum Tunneling in Magnetism: A WKB
Macroscopic Quantum Tunneling of the Magnetic Moment
1. Introduction 2. Tunneling at a macroscopic scale 3. Magnetism in imaginary time 4. Magnetic tunneling in bulk materials 5. Quantum magnetic relaxation 6. Other experimental approaches 7. Tunneling
Quantum Tunneling of Magnetization
In the past couple of years, interest in Quantum Tunneling of Magnetization (QTM) has grown significantly. Since the phenomenon had tended to be regarded as a mere curiosity and mathematical game for
however (for it was the literal soul of the life of the Redeemer, John xv. io), is the peculiar token of fellowship with the Redeemer. That love to God (what is meant here is not God’s love to men)
  • Mat. 22, 036002
  • 2010
New J
  • Phys. 12, 093035 (2010); F. Zähringer, G. Kirchmair, R. Gerritsma, E. Solano, R. Blatt, C. F. Roos, Phys. Rev. Lett. 104, 100503
  • 2010
  • Rev. B 82, 014418
  • 2010
  • Carretta,3, P. Santini, G. Amoretti, C. Muryn, F. Tuna, G. Timco, E. J. L. McInnes, R. E. P. Winpenny, W. Wernsdorfer, and M. Affronte, Phys. Rev. Lett. 104, 037203
  • 2010
  • Mat., 21, 356001
  • 2009
  • Rev. Lett. 101, 237204
  • 2008