Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spinmotive force due to motion of magnetic bubble arrays driven by
  magnetic field gradient   Interaction between local magnetization and conduction electrons is
responsible for a variety of phenomena in magnetic materials. It has been
recently shown that spin current and associated electric voltage can be induced
by magnetization that depends on both time and space. This effect, called
spinmotive force, provides for a powerful tool for exploring the dynamics and
the nature of magnetic textures, as well as a new source for electromotive
force. Here we theoretically demonstrate the generation of electric voltages in
magnetic bubble array systems subjected to a magnetic field gradient. It is
shown by deriving expressions for the electric voltages that the present system
offers a direct measure of phenomenological parameter that describes
non-adiabaticity in the current induced magnetization dynamics. This spinmotive
force opens a door for new types of spintronic devices that exploit the
field-gradient.

27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph