Cavity mode enhancement of terahertz emission from equilateral triangular microstrip antennas of the high-Tcsuperconductor Bi2Sr2CaCu2O8 +δ

Cerkoney, D. P. et al. (2016) Cavity mode enhancement of terahertz emission from equilateral triangular microstrip antennas of the high-Tcsuperconductor Bi2Sr2CaCu2O8 +δ. Journal of Physics: Condensed Matter, 29(1), 015601. (doi: 10.1088/0953-8984/29/1/015601) (PMID:27830669)

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Abstract

We study the transverse magnetic (TM) electromagnetic cavity mode wave functions for an ideal equilateral triangular microstrip antenna (MSA) exhibiting C3v point group symmetry. When the C3v operations are imposed upon the antenna, the TM(m,n) modes with wave vectors $\propto \sqrt{{{m}^{2}}+nm+{{n}^{2}}}$ are much less dense than commonly thought. The R3 operations restrict the integral n and m to satisfy $|m-n|\,=3p$ , where $p\geqslant 0$ and $p\geqslant 1$ for the modes even and odd under reflections about the three mirror planes, respectively. We calculate the forms of representative wave functions and the angular dependence of the output power when these modes are excited by the uniform and non-uniform ac Josephson current sources in thin, ideally equilateral triangular MSAs employing the intrinsic Josephson junctions in the high transition temperature Tc superconductor Bi2Sr2CaCu2${{\text{O}}_{8+\delta}}$ , and fit the emissions data from an earlier sample for which the C3v symmetry was apparently broken.

Item Type:Articles
Additional Information:A Gramajo was supported in part by the UCF RAMP program. C Watanabe was supported by a JSPS Research Fellowship for young scientists. This work was supported in part by CREST-JST (Japan Science and Technology Agency) and WPI (World Premier International Research Center Initiative)- MANA (Materials Nanoarchitectonics) project (NIMS).
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Delfanazari, Dr Kaveh
Authors: Cerkoney, D. P., Reid, C., Doty, C. M., Gramajo, A., Campbell, T. D., Morales, M. A., Delfanazari, K., Tsujimoto, M., Kashiwagi, T., Yamamoto, T., Watanabe, C., Minami, H., Kadowaki, K., and Klemm, R. A.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Journal of Physics: Condensed Matter
Publisher:IOP Publishing Ltd
ISSN:0953-8984
ISSN (Online):1361-648X
Copyright Holders:Copyright © 2016 IOP Publishing Ltd
First Published:First published in Journal of Physics: Condensed Matter 29:015601
Publisher Policy:Reproduced under a Creative Commons licence

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