scholarly journals Spin waves and spatially anisotropic exchange interactions in theS=2stripe antiferromagnetRb0.8Fe1.5S2

2015 ◽  
Vol 92 (4) ◽  
Author(s):  
Meng Wang ◽  
P. Valdivia ◽  
Ming Yi ◽  
J. X. Chen ◽  
W. L. Zhang ◽  
...  
Keyword(s):  
Spin Waves ◽  
Exchange Interactions ◽  
Anisotropic Exchange

scholarly journals Theory of Spin Waves in the Heavy Rare Earth Metals

1971 ◽  
Vol 49 (9) ◽  
pp. 1137-1161 ◽  
Author(s):  
D. A. Goodings ◽  
B. W. Southern
Keyword(s):  
Rare Earth ◽  
Spin Wave ◽  
Equations Of Motion ◽  
Rare Earth Metals ◽  
Spin Waves ◽  
Random Phase ◽  
Wave Interaction ◽  
Exchange Interactions ◽  
Special Cases ◽  
Anisotropic Exchange

A theory of spin waves for the spin structures found in the rare earth metals of h.c.p. crystal structure is described. The theory is developed for the conical spiral spin structure which contains the planar spiral, the nonplanar ferromagnet, and the planar ferromagnet as special cases. Included in the Hamiltonian are isotropic and anisotropic exchange interactions, single-ion crystal field terms, and magnetoelastic terms, both of the single-ion type (linear in the strains and up to fourth order in the spin operators) and of the two-ion type (linear in the strains and second order in the spin operators). The magnetoelastic effects are discussed in considerable detail, both in the "frozen lattice approximation" and in the opposite limit in which the strains closely follow the motion of the (uniformly) processing spins. Equations of motion for the spin operators are linearized with the help of the random phase approximation which makes it possible to express some spin-wave interaction effects in terms of powers of the reduced magnetization. Expressions for the spin-wave energies are given for the planar spiral, the nonplanar ferromagnet, and the planar ferromagnet, taking advantage of the simplifying features in each case.

scholarly journals Heisenberg and anisotropic exchange interactions in magnetic materials with correlated electronic structure and significant spin-orbit coupling

2021 ◽  
Vol 103 (17) ◽  
Author(s):  
Vladislav Borisov ◽  
Yaroslav O. Kvashnin ◽  
Nikolaos Ntallis ◽  
Danny Thonig ◽  
Patrik Thunström ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Magnetic Materials ◽  
Exchange Interactions ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Anisotropic Exchange

Highly Anisotropic Exchange Interactions in a Trigonal Bipyramidal Cyanide-Bridged NiII3OsIII2Cluster

2009 ◽  
Vol 113 (25) ◽  
pp. 6886-6890 ◽  
Author(s):  
Andrei V. Palii ◽  
Oleg S. Reu ◽  
Sergei M. Ostrovsky ◽  
Sophia I. Klokishner ◽  
Boris S. Tsukerblat ◽  
...  
Keyword(s):  
Exchange Interactions ◽  
Trigonal Bipyramidal ◽  
Anisotropic Exchange

Magnetic susceptibility of dimers with anisotropic exchange interactions

1982 ◽  
Vol 21 (12) ◽  
pp. 4332-4334 ◽  
Author(s):  
Seiji. Nakatsuka ◽  
Keiji. Osaki ◽  
Norikiyo. Uryu
Keyword(s):  
Magnetic Susceptibility ◽  
Exchange Interactions ◽  
Anisotropic Exchange
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