Spin waves in several Heisenberg systems:Three-sublattice with different exchange constants (Jab=Jbc≠Jca) anda superlattice with the elementary unit of four or three different layers

1997 ◽  
Vol 55 (18) ◽  
pp. 12408-12423 ◽  
Author(s):  
Zhang Zhi-dong
Keyword(s):  
Spin Waves ◽  
Elementary Unit ◽  
Exchange Constants

scholarly journals Phase transition properties of a finite ferroelectric superlattice from the transverse Ising model.

2000 ◽  
Vol 53 (3) ◽  
pp. 453
Author(s):  
Xiao-Guang Wang ◽  
Ning-Ning Liu ◽  
Shao-Hua Pan ◽  
Guo-Zhen Yang
Keyword(s):  
Phase Transition ◽  
Ising Model ◽  
Curie Temperature ◽  
Transfer Matrix ◽  
Transfer Matrix Method ◽  
Matrix Method ◽  
Type B ◽  
Elementary Unit ◽  
Transverse Ising Model ◽  
Exchange Constants

We consider a finite ferroelectric superlattice in which the elementary unit cell is made up of 1 atomic layers of type A and n atomic layers of type B. Based on the transverse Ising model we examine the phase transition properties of the ferroelectric superlattice. Using the transfer matrix method we derive the equation for the Curie temperature of the superlattice. Numerical results are given for the dependence of the Curie temperature on the thickness and exchange constants of the superlattice.

Spin waves and Heisenberg exchange constants for α-iron

1991 ◽  
Vol 172 (1-2) ◽  
pp. 79-84 ◽  
Author(s):  
H. Köhler ◽  
J. Sticht ◽  
J. Kübler
Keyword(s):  
Spin Waves ◽  
Heisenberg Exchange ◽  
Exchange Constants

Spin waves

1972 ◽  
Vol 14 (7) ◽  
pp. 233-245
Author(s):  
B. Hennion ◽  
F. Moussa
Keyword(s):  
Spin Waves

ENERGY RENORMALISATION AND DAMPING OF SURFACE SPIN WAVES IN HEISENBERG FERROMAGNETS

1984 ◽  
Vol 45 (C5) ◽  
pp. C5-329-C5-333 ◽  
Author(s):  
D. E. Kontos ◽  
M. G. Cottam
Keyword(s):  
Spin Waves ◽  
Surface Spin

SYMMETRY OF SPIN WAVES AND HALDANE GAP IN CsNiCl3

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1431-C8-1432
Author(s):  
Z. Tun ◽  
W. J. L. Buyers ◽  
R. L. Armstrong ◽  
E. D. Hallman ◽  
D. P. Arovas
Keyword(s):  
Spin Waves ◽  
Haldane Gap

Energetic model for an elementary unit of a steam network

2006 ◽  
Vol 1 (3) ◽  
pp. 91-102 ◽  
Author(s):  
Lajos Szakonyi ◽  
Zoltan Sari ◽  
Ildiko Jancskar
Keyword(s):  
Elementary Unit ◽  
Energetic Model
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