Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electrical imprint effects on far infrared (FIR) transmittance spectrum
  in PZT ferroelectric films   Tunable transmittance response in the $0.1-25$ THz range for a lead Zirconate
Titanate Ferroelectric film under imprint effects and surface anisotropy is
calculated by adapting the classical Landau Devonshire theory and the Rouard's
method. Induced electrical field is introduced by modulating the $P-E$
polarization profile, while the dielectric permittivity frequency dependence
enters into the formalism by taking into the account the soft phonon mode
E(TO1) contribution in the framework of the Drude-Lorentz model. It is found
that two optical states of light transmittance emerge at zero applied field and
normal incidence, and the intensities of transmitted light are closely
correlated with the strength of imprint and the path of the electrical
polarization.

5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int