scholarly journals Probing exotic spin correlations by muon spin depolarization measurements with applications to spin glass dynamics

2001 ◽  
Vol 64 (5) ◽  
Author(s):  
Amit Keren ◽  
Galina Bazalitsky ◽  
Ian Campbell ◽  
James S. Lord
Keyword(s):  
Spin Glass ◽  
Muon Spin ◽  
Spin Correlations ◽  
Spin Depolarization ◽  
Glass Dynamics

scholarly journals Temperature chaos is present in off-equilibrium spin-glass dynamics

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Marco Baity-Jesi ◽  
Enrico Calore ◽  
Andrés Cruz ◽  
Luis Antonio Fernandez ◽  
José Miguel Gil-Narvion ◽  
...  
Keyword(s):  
Spin Glass ◽  
Dynamic Effect ◽  
Large Degree ◽  
Equilibrium Temperature ◽  
Experimental Conditions ◽  
Temperature Changes ◽  
Equilibrium Dynamics ◽  
Glass Dynamics ◽  
Extreme Sensitivity ◽  
Non Equilibrium

AbstractExperiments featuring non-equilibrium glassy dynamics under temperature changes still await interpretation. There is a widespread feeling that temperature chaos (an extreme sensitivity of the glass to temperature changes) should play a major role but, up to now, this phenomenon has been investigated solely under equilibrium conditions. In fact, the very existence of a chaotic effect in the non-equilibrium dynamics is yet to be established. In this article, we tackle this problem through a large simulation of the 3D Edwards-Anderson model, carried out on the Janus II supercomputer. We find a dynamic effect that closely parallels equilibrium temperature chaos. This dynamic temperature-chaos effect is spatially heterogeneous to a large degree and turns out to be controlled by the spin-glass coherence length ξ. Indeed, an emerging length-scale ξ* rules the crossover from weak (at ξ ≪ ξ*) to strong chaos (ξ ≫ ξ*). Extrapolations of ξ* to relevant experimental conditions are provided.

Spin-glass dynamics

1998 ◽  
Vol 177-181 ◽  
pp. 63-66 ◽  
Author(s):  
I.A. Campbell ◽  
J. Hammann ◽  
H. Kawamura ◽  
R.H. McKenzie ◽  
P. Nordblad ◽  
...  
Keyword(s):  
Spin Glass ◽  
Glass Dynamics

?SR and other microscopic probes of spin-glass dynamics

1981 ◽  
Vol 8 (4-6) ◽  
pp. 749-756 ◽  
Author(s):  
D. E. MacLaughlin
Keyword(s):  
Spin Glass ◽  
Glass Dynamics

scholarly journals Dichotomy in temporal and thermal spin correlations observed in the breathing pyrochlore LiGa1−xInxCr4O8

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
S. Lee ◽  
S.-H. Do ◽  
W. Lee ◽  
Y. S. Choi ◽  
J. van Tol ◽  
...  
Keyword(s):  
Time Scale ◽  
Spin Dynamics ◽  
Muon Spin ◽  
Quantum Spin ◽  
Spin Liquid ◽  
Fast Time ◽  
Spin Liquids ◽  
Magnetic Ground State ◽  
Spin Correlations ◽  
Magnetic Specific Heat

AbstractA breathing pyrochlore system is predicted to host a variety of quantum spin liquids. Despite tremendous experimental and theoretical efforts, such sought-after states remain elusive as perturbation terms and lattice distortions lead to magnetic order. Here, we utilize bond alternation and disorder to tune a magnetic ground state in the Cr-based breathing pyrochlore LiGa1−xInxCr4O8. By combining thermodynamic and magnetic resonance techniques, we provide experimental signatures of a spin-liquid-like state in x = 0.8, namely, a nearly T2-dependent magnetic specific heat and persistent spin dynamics by muon spin relaxation (μSR). Moreover, 7Li NMR, ZF-μSR, and ESR unveil the temporal and thermal dichotomy of spin correlations: a tetramer singlet on a slow time scale vs. a spin-liquid-like state on a fast time scale. Our results showcase that a bond disorder in the breathing pyrochlore offers a promising route to disclose exotic magnetic phases.

scholarly journals An experiment-oriented analysis of 2D spin-glass dynamics: a twelve time-decades scaling study

2019 ◽  
Vol 52 (22) ◽  
pp. 224002 ◽  
Author(s):  
L A Fernandez ◽  
E Marinari ◽  
V Martin-Mayor ◽  
G Parisi ◽  
J J Ruiz-Lorenzo
Keyword(s):  
Spin Glass ◽  
Glass Dynamics
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