Geometrical Resonance Conditions for THz Radiation from the Intrinsic Josephson Junctions in Bi2Sr2CaCu2O8þ
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Subterahertz radiation emitted from a variety of short rectangular-, square-, and disk-shaped mesas of intrinsic Josephson junctions fabricated from a Bi2Sr2CaCu2O8+δ 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.
論文 | ランダム
- 危い時代の日本と日本人 (特集 私にとっての国 国にとってのあなた)
- 書評 『豊子〔ガイ〕研究』(楊暁文)
- 「又A又B」について
- 中国語の音訳外来語と日本語のカタカナ語
- 燕帰人未帰--楊暁文著『豊子凱研究』