Author: Tsujimoto M Maeda Y Kambara H Elarabi A Yoshioka Y Nakagawa Y Wen Y Doi T Saito H Kakeya I
Publisher: IOP Publishing
E-ISSN: 1361-6668|28|10|105015-105019
ISSN: 0953-2048
Source: Superconductor Science and Technology, Vol.28, Iss.10, 2015-10, pp. : 105015-105019
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Abstract
We observe continuous terahertz-wave emission from a stack of intrinsic Josephson junctions made of slightly Pb-doped Bi2Sr2CaCu2O&${}_{8+delta }$;. We investigate how Pb doping affects the c-axis current–voltage and emission characteristics. The terahertz emission spectra are measured by Fourier-transform infrared spectroscopy and reveal that the emission frequency is remarkably increased by Pb doping, an effect that we attribute to cavity resonance.
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