Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Toward accurate polarization estimation in nanoscopic systems   The nanoscopic characterization of ferroelectric thin films is crucial from
their device application point of view. Standard characterization techniques
are based on detecting the nanoscopic charge compensation current (switching
current) caused by the polarization reversal in the ferroelectric. Owing to
various surface and bulk limited mechanisms, leakage currents commonly appear
during such measurements, which are frequently subtracted using the device I-V
characteristic by employing positive-up-negative-down (PUND) measurement
scheme. By performing nanoscopic switching current measurements on a commonly
used ferroelectric, BiFeO3, we show that such characterization methods may be
prone to large errors in the polarization estimation on ferro-resistive
samples, due to current background subtraction issues. Especially, when
ferro-resistive behavior is associated with the polarization reversal of the
ferroelectric thin film, background current subtraction is not accurate due to
the mismatch of the I-V characteristics for the two polarization states. We
show instead that removing the background current by an asymmetric least
squares subtraction method, though not perfect, gives a much better estimation
of the ferroelectric properties of the sample under study.

3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph