Spin-dynamics of the classical easy-plane Heisenberg chain

1992 ◽  
Vol 104-107 ◽  
pp. 1067-1068 ◽  
Author(s):  
H. Grille ◽  
G. Kamieniarz ◽  
R.W. Gerling
Keyword(s):  
Spin Dynamics ◽  
Easy Plane ◽  
Heisenberg Chain

scholarly journals Entanglement perturbation theory for infinite quasi-1D quantum systems

2015 ◽  
Vol 29 (07) ◽  
pp. 1550042 ◽  
Author(s):  
Lihua Wang ◽  
Sung Gong Chung
Keyword(s):  
Phase Diagram ◽  
Perturbation Theory ◽  
Nearest Neighbor ◽  
Quantum Systems ◽  
Easy Plane ◽  
Heisenberg Chain ◽  
The Third ◽  
Plane Anisotropy ◽  
Improved Accuracy

We develop entanglement perturbation theory (EPT) for infinite Quasi-1D quantum systems. The spin-1/2 Heisenberg chain with ferromagnetic nearest neighbor (NN) and antiferromagnetic next nearest neighbor (NNN) interactions with an easy-plane anisotropy is studied as a prototypical system. The obtained phase diagram is compared with a recent prediction [Phys. Rev. B 81, 094430 (2010)] that dimer and Néel orders appear alternately as the XXZ anisotropy Δ approaches the isotropic limit Δ = 1. The first and second transitions (across dimer, Néel and dimer phases) are detected with improved accuracy at Δ ≈ 0.722 and 0.930. The third transition (from dimer to Néel phases), previously predicted to be at Δ ≈ 0.98, is not detected at this Δ in our method, strongly indicating that the second Néel phase is absent.

Ultrafast Spin Dynamics in the Iron Borate Easy-Plane Weak Ferromagnet

2020 ◽  
Vol 131 (1) ◽  
pp. 130-138
Author(s):  
A. K. Zvezdin ◽  
A. V. Kimel ◽  
D. I. Plokhov ◽  
K. A. Zvezdin
Keyword(s):  
Spin Dynamics ◽  
Easy Plane ◽  
Iron Borate ◽  
Weak Ferromagnet

Critical spin dynamics in Rb2CrCl4: A nearly two-dimensional easy-plane ferromagnet

1986 ◽  
Vol 54-57 ◽  
pp. 673-674 ◽  
Author(s):  
M.T. Hutchings ◽  
P. Day ◽  
E. Janke ◽  
R. Pynn
Keyword(s):  
Spin Dynamics ◽  
Easy Plane ◽  
Two Dimensional

Phase transition and spin dynamics in the two-dimensional easy-plane ferromagnet

1993 ◽  
Vol 48 (17) ◽  
pp. 12698-12703 ◽  
Author(s):  
A. S. T. Pires ◽  
M. E. Gouvêa
Keyword(s):  
Phase Transition ◽  
Spin Dynamics ◽  
Easy Plane ◽  
Two Dimensional
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