CUED Publications database

Tunable THz radiation from intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ in a localized phase rotating mode

Tsujimoto, M and Delfanazari, K and Kitamura, T and Sawamura, M and Ishida, K and Sekimoto, S and Watanabe, C and Yamamoto, T and Kashiwagi, T and Minami, H and Kadowaki, K Tunable THz radiation from intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ in a localized phase rotating mode. In: APS March Meeting 2013, 2013-3-18 to 2013-3-22, Maryland, USA.. (Unpublished)

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Abstract

After the first report of intense continuous THz electromagnetic wave radiation from high-Tc superconductor Bi2Sr2CaCu2O8+δ [L. Ozyuzer et al., Science 318, 1291 (2007)] with remarkably higher intensity, a great deal of interest have been drawn not only to the physical mechanism of the radiation but also to the possible variety of applications in the vast fields of THz science and technology. Recently, the authors pointed out that the contributions to the output power from the Josephson current source was found to be comparable in magnitude [ K. Kadowaki et al., J. Phys. Soc. Jpn. 79, 023703 (2010); M. Tsujimoto et al., Phys. Rev. Lett. 108, 107006 (2012)]. As R. Kleiner et al. observed in 1992 [ R. Kleiner et al., Phys. Rev. Lett. 68, 2394 (1992) ], the intrinsic junctions in the phase rotating mode produce an equal number of IV​ characteristic branches. Here we show clear evidence that the mesas can emit radiation at many frequencies in various localized phase rotating modes, and that the resulting radiation is tunable over a broad range of frequencies, allowing us to construct a powerful THz source device that could fill the THz gap. JST-CREST, WPI-MANA

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 24 Feb 2018 20:06
Last Modified: 10 Nov 2020 11:27
DOI: