Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electron-Beam Driven Relaxation Oscillations in Ferroelectric Nanodisks   Using a combination of computational simulations, atomic-scale resolution
imaging and phenomenological modelling, we examine the underlying mechanism for
nanodomain restructuring in lead zirconate titanate (PZT) nanodisks driven by
electron beams. The observed subhertz nanodomain dynamics are identified with
relaxation oscillations where the charging/discharging cycle time is determined
by saturation of charge traps and nanodomain wall creep. These results are
unusual in that they indicate very slow athermal dynamics in nanoscale systems.

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The categories of this paper are: physics
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
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The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: cs
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The categories of this paper are: nlin
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The categories of this paper are: bayes-an
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The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph