Spin-wave spectrum of a two-dimensional itinerant-electron antiferromagnet based on aCuO2layer: Approximate mapping onto an effective Heisenberg model

1992 ◽  
Vol 45 (14) ◽  
pp. 7816-7827 ◽  
Author(s):  
E. Arrigoni ◽  
G. C. Strinati
Keyword(s):  
Spin Wave ◽  
Heisenberg Model ◽  
Wave Spectrum ◽  
Itinerant Electron ◽  
Two Dimensional ◽  
Spin Wave Spectrum

Spin wave spectrum of quasi-two-dimensional antiferromagnet NH3(CH2)2NH3MnCl4

1994 ◽  
Vol 194-196 ◽  
pp. 187-188 ◽  
Author(s):  
V.V. Eremenko ◽  
V.I. Fomin ◽  
V.S. Kurnosov
Keyword(s):  
Spin Wave ◽  
Wave Spectrum ◽  
Two Dimensional ◽  
Spin Wave Spectrum

scholarly journals Antiferromagnetism in two-dimensional quasicrystals

2009 ◽  
Vol 224 (1-2) ◽  
Author(s):  
Anuradha Jagannathan ◽  
Attila Szallas
Keyword(s):  
Spin Wave ◽  
Wave Spectrum ◽  
Two Dimensional ◽  
Translational Invariance ◽  
Spin Correlations ◽  
Magnetic Order Parameter ◽  
Quasiperiodic Structures ◽  
Penrose Tilings ◽  
Spin Wave Spectrum ◽  
Magnon Excitation

AbstractQuasiperiodic structures possess long range positional order, but are freed of constraints imposed by translational invariance. For spins interacting via Heisenberg couplings, one may expect therefore to find novel magnetic configurations in such structures. We have studied magnetic properties for simple two dimensional models, as a first step towards understanding experimentally studied magnetic quasicrystals such as the Zn–Mg–R(rare earth) compounds. We analyse properties of the antiferromagnetic groundstate and magnon excitation modes for bipartite tilings such as the octagonal and Penrose tilings. In the absence of frustration, one has an inhomogeneous Neel-ordered ground state, with local quantum fluctuations of the local staggered magnetic order parameter. We study the spin wave spectrum and wavefunctions of such antiferromagnets within the linear spin wave approximation. Some results for spin-spin correlations in these systems are discussed.

Effects of molecular adsorption on the spin-wave spectrum and magnon relaxation in two-dimensional Cr2Ge2Te6

2020 ◽  
Vol 22 (38) ◽  
pp. 22047-22054
Author(s):  
Ke Wang ◽  
Kai Ren ◽  
Yuan Cheng ◽  
Min Zhang ◽  
Hai Wang ◽  
...  
Keyword(s):  
Magnetic Materials ◽  
Spin Wave ◽  
Phonon Scattering ◽  
Wave Spectrum ◽  
Exchange Constant ◽  
Molecular Adsorption ◽  
Two Dimensional ◽  
Spin Wave Spectrum

Molecular adsorption has remarkable impacts on the exchange constant and magnon–phonon scattering of magnetic materials.

Forbidden Band Gaps in the Spin-Wave Spectrum of a Two-Dimensional Bicomponent Magnonic Crystal

2012 ◽  
Vol 109 (13) ◽  
Author(s):  
S. Tacchi ◽  
G. Duerr ◽  
J. W. Klos ◽  
M. Madami ◽  
S. Neusser ◽  
...  
Keyword(s):  
Spin Wave ◽  
Wave Spectrum ◽  
Band Gaps ◽  
Two Dimensional ◽  
Magnonic Crystal ◽  
Spin Wave Spectrum
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