CUED Publications database

The relationship between oscillation modes and single crystalline Bi2212 mesa structures

Kashiwagi, T and Deguchi, K and Tsujimoto, M and Delfanazari, K and Koike, T and Orita, N and Nakayama, R and Kitamura, T and Hangio, S and Sawamura, M and Yamamoto, T and Minami, H and Kadowaki, K (2011) The relationship between oscillation modes and single crystalline Bi2212 mesa structures. In: The American Physical Society March meeting, 2011-3-21 to 2011-3-25, Dallas, Texas, USA..

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Continuous electromagnetic (EM) radiation in terahertz region has been observed from a rectangular mesa structure of Bi2Sr2CaCu2O8+δ(Bi2212) single crystals.\footnote{L. Ozyuzer \textit{et al.}, Science \textbf{318} (2007) 1291.} It has been established that the radiation frequency is determined by both ac Josephson effect and geometrical cavity resonance condition.\footnote{K. Kadowaki \textit{et al.}, J. Phys. Soc. Jpn. \textbf{79} (2010) 023703} The observed radiation frequencies in the many rectangular mesas studied were inversely proportional to the width of the mesa and the fundamental modes equal to twice the mesa width. Recently, several mesas show different radiation characteristics which suggest the existence of the higher excitation modes such as one wave length excitation mode. The observed frequencies from above mesas are almost explained by the geometrical cavity model. In order to clarify the detail of the excitation modes, we also measured the radiation pattern of EM waves. *This work was supported by CREST-JST and WPI-MANA project (NIMS). This work is in part performed in collaboration with Dr. Wai Kwok and his group in Argonne National Lab.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 25 Feb 2018 20:07
Last Modified: 18 Aug 2020 12:44