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Chaotic physics in ferroelectrics hints at brain-like computing

Chaotic physics in ferroelectrics hints at brain-like computing. a). b ). Schemes of the switching by SPM tip and long-range domain-domain interaction Bifurcation diagram of the domain size in the chain vs period in the chain.

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Chaotic physics in ferroelectrics hints at brain-like computing

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  1. Chaotic physics in ferroelectrics hints at brain-like computing a) b) Schemes of the switching by SPM tip and long-range domain-domain interaction Bifurcation diagram of the domain size in the chain vs period in the chain Work was performed at the Center for Nanophase Materials Sciences, ORNL A.V. Ievlev, S. Jesse, A.N. Morozovska, E. Strelcov, E. A. Eliseev, Y. V. Pershin, A. Kumar, V. Ya. Shur,S. V. Kalinin, Nature Physics 2013, 10.1038/nphys2796 Scientific Achievement Complex spatial dynamics observed during scanning probe microscopy (SPM) tip-induced polarization reversal on the surface of single-crystalline LiNbO3 enables a new generation of memristive, memcapacitive and neuromorphic devices. Significance and Impact Ferroelectric materials are widely used in optic, acoustic and data storagedevices. Intermittency, quasiperiodicity and chaos revealed during writing 1D chains of domains reveals that polarization switching is a coupled physical and surface electrochemical process mediated by long-range ionic flows. These long-range interactions enable new ferroelectric-based architectures with potential for information processing. Research Details • SPM tip-induced writing of 1D domain chains has been studied on the surface of a 20-mm-thick LiNbO3 single crystal with dependence on the period in the chain, temperature and relative humidity. • Observed long-range interaction has been explained by the influence of the depolarization field of the initial domains in the chain mediated by ionic flows.

  2. Chaotic physics in ferroelectrics hints at brain-like computing (Art composition) Domains formed on the surface of lithium niobate single crystal by the conductive tip of a scanning probe microscope form a basis for a novel information-processing device. A.V. Ievlev, S. Jesse, A.N. Morozovska, E. Strelcov, E. A. Eliseev, Y. V. Pershin, A. Kumar, V. Ya. Shur,S. V. Kalinin, Nature Physics 2013, 10.1038/nphys2796 Work was performed at the Center for Nanophase Materials Sciences, ORNL Scientific Achievement Complex spatial dynamics are demonstrated on the surface of a ferroelectric material as a result polarization switching induced by a nanometer-scale scanning probe microscopy tip. Significance and Impact Effects of these dynamic behaviors enable a new platform for neuro-biological like memory and computation. The complexity of ferroelectric physics could lead to novel applications for information processing. Research Details A series of domains have been written by a scanning probe microscope under different conditions. Organized and chaotic patterns appear due to long-range interactions between neighbouring domains.

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