Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Controlling spin-orbit torque by polarization field in multiferroic
  BiFeO3 based heterostructures   In the last few years, some ideas of electric manipulations in ferromagnetic
heterostructures have been proposed for developing next generation spintronic
devices. Among them, the magnetization switching driven by spin-orbit torque
(SOT) is being intensely pursued. Especially, how to control the switching
current density, which is expected to enrich device functionalities, has
aroused much interest among researchers all over the world. In this paper, a
novel method to adjust the switching current is proposed, and the BiFeO3 (BFO)
based heterostructures with opposite spontaneous polarizations fields show huge
changes in both perpendicular magnetic anisotropy and the SOT-induced
magnetization switching. The damping-like torques were estimated by using
harmonic Hall voltage measurement, and the variation of effective spin Hall
angles for the heterostructures with opposite polarizations was calculated to
be 272%. At the end of this paper, we have also demonstrated the possible
applications of our structure in memory and reconfigurable logic devices.

9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th