The visco modified Heisenberg ferromagnet equation and physical applications

Optik ◽  
2021 ◽  
pp. 167815
Author(s):  
Nevin Ertuğ Gürbüz ◽  
Dae Won Yoon
Keyword(s):  
Heisenberg Ferromagnet

On the Existence of Local Levels in a Heisenberg Ferromagnet

1976 ◽  
Vol 76 (2) ◽  
pp. K85-K88 ◽  
Author(s):  
B. S. Tošić ◽  
M. M. Marinković
Keyword(s):  
Heisenberg Ferromagnet ◽  
Local Levels

Topological Hall effect in thin films of the Heisenberg ferromagnet EuO

2015 ◽  
Vol 91 (24) ◽  
Author(s):  
Y. Ohuchi ◽  
Y. Kozuka ◽  
M. Uchida ◽  
K. Ueno ◽  
A. Tsukazaki ◽  
...  
Keyword(s):  
Thin Films ◽  
Hall Effect ◽  
Heisenberg Ferromagnet ◽  
Topological Hall Effect

scholarly journals THOULESS NUMBER AND SPIN DIFFUSION IN QUANTUM HEISENBERG FERROMAGNETS

1993 ◽  
Vol 07 (27) ◽  
pp. 1747-1759 ◽  
Author(s):  
PETER KOPIETZ
Keyword(s):  
Spin Diffusion ◽  
Nearest Neighbor ◽  
Arbitrary Dimension ◽  
Quantum Spin ◽  
Spin Systems ◽  
Heisenberg Ferromagnet ◽  
Electronic Systems ◽  
Dimensionless Frequency ◽  
Spin Models ◽  
Quantum Spin Models

Using an analogy between the conductivity tensor of electronic systems and the spin stiffness tensor of spin systems, we introduce the concept of the Thouless number g0 and the dimensionless frequency-dependent conductance g(ω) for quantum spin models. It is shown that spin diffusion implies the vanishing of the Drude peak of g(ω), and that the spin diffusion coefficient Ds is proportional to g0. We develop a new method based the Thouless number to calculate D s , and present results for D s in the nearest-neighbor quantum Heisenberg ferromagnet at infinite temperatures for arbitrary dimension d and spin S.

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