Dynamical Spin Correlations in Many‐Spin Systems

1968 ◽  
Vol 39 (2) ◽  
pp. 1355-1355
Author(s):  
Raza A. Tahir‐Kheli
Keyword(s):  
Spin Systems ◽  
Spin Correlations ◽  
Dynamical Spin

scholarly journals Dynamical spin correlations of the kagome antiferromagnet

2021 ◽  
Vol 103 (1) ◽  
Author(s):  
P. Prelovšek ◽  
M. Gomilšek ◽  
T. Arh ◽  
A. Zorko
Keyword(s):  
Spin Correlations ◽  
Dynamical Spin

scholarly journals Short-range Berezinskii-Kosterlitz-Thouless Phase Characterization for the q-state Clock Model

2021 ◽  
Author(s):  
Oscar Andres Negrete ◽  
Patricio Vargas ◽  
Francisco Jose Peña ◽  
Gonzalo Saravia ◽  
Eugenio Emilio Vogel
Keyword(s):  
Short Range ◽  
Nearest Neighbors ◽  
Vortex State ◽  
Spin Systems ◽  
Xy Model ◽  
Clock Model ◽  
Spin Correlations ◽  
Vortex States ◽  
Higher Temperature ◽  
Phase Characterization

Beyond the usual ferromagnetic and paramagnetic phases present in spin systems, the usual q-state clock model, presents an intermediate vortex state when the number of possible orientations q for the system is equal to 5 or larger. Such vortex states give rise to the Berezinskii-Kosterlitz-Thouless (BKT) phase present up to the XY model in the limit q→∞. Based on information theory, we present here an analysis of the classical order parameters plus new short-range parameters defined here. Thus, we show that even using the first nearest neighbors spin-spin correlations only, it is possible to distinguish the two transitions presented by this system for q greater than or equal to 5. Moreover, the appearance at relatively low temperature and disappearance of the BKT phase at a rather fix higher temperature is univocally determined by the short-range interactions recognized by the information content of classical and new parameters.

scholarly journals Quantum Memory Assisted Probing of Dynamical Spin Correlations

2012 ◽  
Vol 108 (6) ◽  
Author(s):  
O. Romero-Isart ◽  
M. Rizzi ◽  
C. A. Muschik ◽  
E. S. Polzik ◽  
M. Lewenstein ◽  
...  
Keyword(s):  
Quantum Memory ◽  
Spin Correlations ◽  
Dynamical Spin
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