Issue |
EPL
Volume 136, Number 4, November 2021
|
|
---|---|---|
Article Number | 46003 | |
Number of page(s) | 6 | |
Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
DOI | https://doi.org/10.1209/0295-5075/ac35bb | |
Published online | 07 March 2022 |
A reconfigurable band-stop filter using piezoelectric-piezomagnetic superlattices with an external DC electric field
1 School of Physics and Electronic and Electrical Engineering, Xiangnan University - Chenzhou 423000, China
2 National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University Nanjing 210093, China
(a) leidajun@xnu.edu.cn (corresponding author)
Received: 23 July 2021
Accepted: 2 November 2021
A novel reconfigurable band-stop filter using piezomagnetic-piezoelectric superlattices with the external direct-current (DC) electric field (PPSED) is presented. The center frequency of the forbidden band is reduced from to Hz in the band-stop filter as the thickness ratio of the piezoelectric domain to the piezomagnetic domain increases from to 9. The change of the forbidden bandwidth and the center frequency shows that the band-stop filter constructed by the PPSED is reconfigurable. The coupled polaritonic band structure is asymmetric with respect to the forward and backward directions and the forbidden bandwidth can be tuned by the DC electric field via the electro-optic effect. Unlike pure piezoelectric superlattices with the DC electric field, the forbidden bandwidth decreases with the increase of the electric field in the PPSED. The bandwidth tunability by the DC electric field can provide a guidance for the reconfigurable band-stop filter design to work in broadband frequencies.
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