Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Domain Wall Motion Driven by Laplace Pressure in CoFeB-MgO Nanodots with
  Perpendicular Anisotropy   We have studied the magnetization reversal of CoFeB-MgO nanodots with
perpendicular anisotropy for size ranging from w=400 nm to 1 {\mu}m. Contrary
to previous experiments, the switching field distribution is shifted toward
lower magnetic fields as the size of the elements is reduced with a mean
switching field varying as 1/w. We show that this mechanism can be explained by
the nucleation of a pinned magnetic domain wall (DW) at the edges of the
nanodots where damages are introduced by the patterning process. As the surface
tension (Laplace pressure) applied on the DW increases when reducing the size
of the nanodots, we demonstrate that the depinning field to reverse the entire
elements varies as 1/w. These results suggest that the presence of DWs has to
be considered in the switching process of nanoscale elements and open a path
toward scalable spintronic devices.

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The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci