scholarly journals Frustrated impurity spins in ordered two-dimensional quantum antiferromagnets

2006 ◽  
Vol 74 (18) ◽  
Author(s):  
A. V. Syromyatnikov ◽  
S. V. Maleyev
Keyword(s):  
Two Dimensional ◽  
Quantum Antiferromagnets

Quantum Monte Carlo Simulations of Models Related to High-Tc Superconductivity on a Transputer Network

1991 ◽  
Vol 02 (01) ◽  
pp. 132-142
Author(s):  
JOSEPH D. REGER
Keyword(s):  
Monte Carlo ◽  
Quantum Monte Carlo ◽  
Magnetic Behaviour ◽  
Two Dimensional ◽  
Temperature Behaviour ◽  
High Tc ◽  
Quantum Antiferromagnets ◽  
New Type ◽  
Quantum Monte Carlo Simulations ◽  
Insight Into

Much of the insight into the low temperature behaviour of two-dimensional quantum antiferromagnets has been recently obtained by extensive Monte Carlo. These models are relevant in the study of the magnetic behaviour of high Tc compounds containing copper-oxide layers. While of little technical importance, the physical properties of these models are certainly important for the understanding of the new type of behaviour that leads to superconductivity under certain conditions.

scholarly journals Dimensional modulation of spontaneous magnetic order in quasi-two-dimensional quantum antiferromagnets

2016 ◽  
Vol 94 (14) ◽  
Author(s):  
Shunsuke C. Furuya ◽  
Maxime Dupont ◽  
Sylvain Capponi ◽  
Nicolas Laflorencie ◽  
Thierry Giamarchi
Keyword(s):  
Magnetic Order ◽  
Two Dimensional ◽  
Quantum Antiferromagnets

LOW TEMPERATURE ACTION FOR QUANTUM ANTIFERROMAGNETS ON A TRIANGULAR LATTICE

1990 ◽  
Vol 04 (04) ◽  
pp. 569-580 ◽  
Author(s):  
ANTIMO ANGELUCCI
Keyword(s):  
Low Temperature ◽  
Configuration Space ◽  
Triangular Lattice ◽  
Ground State ◽  
Two Dimensional ◽  
Heisenberg Antiferromagnet ◽  
Low Frequencies ◽  
Quantum Antiferromagnets ◽  
Temperature Action

We present the long-wavelengths/low-frequencies action of a two-dimensional quantum Heisenberg antiferromagnet of general spin magnitude s on a triangular lattice which describe the fluctuations around the ordered Neél ground state. This action is a nonlinear σ-model whose configuration space is the SO(3) manifold, in this respect being different from the usual S2 σ-model which models an antiferromagnet on a bipartite lattice. We present a map on a O(4)-model which allows to study the properties of the system.

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