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Geometrical Resonance Conditions for THz Radiation from the Intrinsic Josephson Junctions in Bi2Sr2CaCu2O8+delta

Source: Phys. Rev. Lett. 105, 037005 (2010); doi:10.1103/PhysRevLett.105.037005

Published 15 July 2010

PACS
  • 74.50.+r
    Superconductor tunneling phenomena; point contacts, weak links, Josephson effects
  • 07.57.Hm
    Infrared, submillimeter wave, microwave, and radiowave sources
  • 85.25.Cp
    Josephson devices
  • YEAR: 2010
PUBLICATION DATA
Publisher:
AIP is a member of CrossRef APS
Manabu Tsujimoto, Kazuhiro Yamaki, Kota Deguchi, Takashi Yamamoto, Takanari Kashiwagi, Hidetoshi Minami, Masashi Tachiki, and Kazuo Kadowaki
Institute of Materials Science, Graduate School of Pure & Applied Sciences, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki 305-8573, Japan

Richard A. Klemm
Department of Physics, University of Central Florida, Orlando, Florida 32816, USA
Subterahertz radiation emitted from a variety of short rectangular-, square-, and disk-shaped mesas of intrinsic Josephson junctions fabricated from a Bi2Sr2CaCu2O8+delta single crystal was studied from the observed I-V characteristics, far-infrared spectra, and spatial radiation patterns. In all cases, the radiation frequency satisfies the conditions both for the ac Josephson effect and for a mesa cavity resonance mode. The integer higher harmonics observed in all spectra imply that the ac Josephson effect plays the dominant role in the novel dual-source radiation mechanism. ©2010 The American Physical Society
History: Received 12 February 2010; published 15 July 2010
Permalink: http://link.aps.org/abstract/PRL/v105/e037005
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