Novel dynamical effects and glassy response in strongly correlated electronic system

Abstract

We find an unconventional nucleation of low temperature paramagnetic metal (PMM) phase with monoclinic structure from the matrix of high-temperature antiferromagnetic insulator (AFI) phase with tetragonal structure in strongly correlated electronic system $BaC{o}_{0.9}N{i}_{0.1}{S}_{1.97}$. Such unconventional nucleation leads to a decease in resistivity by several orders with relaxation at a fixed temperature without external perturbation. The novel dynamical process could arise from the competition of strain fields, Coulomb interactions, magnetic correlations and disorders. Such competition may frustrate the nucleation, giving rise to a slow, nonexponential relaxation and "physical aging" behavior.

5 pages, 4 figures

References in corpus (8)

• Magnetic Field Suppression of the Conducting Phase in Two Dimensions
• Disorder-Driven Non-Fermi Liquid Behavior of Correlated Electrons
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• Melting of the Electron Glass
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Cited by in corpus (2)

• Real Space Visualization of Thermomagnetic Irreversibility within Supercooling and Superheating Spinodals in $M{n}_{1.85}C{o}_{0.15}Sb$ using Scanning Hall Probe Microscopy
• Spin-glass dynamics: experiment, theory and simulation