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Study of coherent and continuous terahertz wave emission in equilateral triangular mesas of superconducting Bi<inf>2</inf>Sr<inf>2</inf>CaCu <inf>2</inf>O<inf>8+δ</inf> intrinsic Josephson junctions

Delfanazari, K and Asai, H and Tsujimoto, M and Kashiwagi, T and Kitamura, T and Yamamoto, T and Sawamura, M and Ishida, K and Tachiki, M and Klemm, RA and Hattori, T and Kadowaki, K (2013) Study of coherent and continuous terahertz wave emission in equilateral triangular mesas of superconducting Bi<inf>2</inf>Sr<inf>2</inf>CaCu <inf>2</inf>O<inf>8+δ</inf> intrinsic Josephson junctions. Physica C: Superconductivity and its Applications, 491. pp. 16-19. ISSN 0921-4534

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Abstract

We report on intense and coherent terahertz (THz) electromagnetic (EM) waves emitted from equilateral triangular mesa structures of the intrinsic Josephson junctions (IJJs) in single crystalline high-Tc superconducting Bi2Sr2CaCu2O 8+δ. The focused ion beam milling technique is used for mesa fabrication. THz radiation is observed when the emission frequency is in the vicinity of the primary cavity resonance frequency determined by the mesa geometry. We also investigated numerically the THz radiation from such mesas using the finite difference time domain method. We found an apparent EM mode similar to the known TM(1, 0) = TM(0, 1) cavity mode during the THz emission. © 2013 Elsevier Ltd. All rights reserved.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:00
Last Modified: 24 Nov 2020 08:51
DOI: 10.1016/j.physc.2012.12.009