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Broadly tunable subterahertz emission from Internal Branches of the current-Voltage characteristics of superconducting bi <inf>2</inf>Sr <inf>2</inf>CaCu <inf>2</inf>O <inf>8+δ</inf> single crystals

Tsujimoto, M and Yamamoto, T and Delfanazari, K and Nakayama, R and Kitamura, T and Sawamura, M and Kashiwagi, T and Minami, H and Tachiki, M and Kadowaki, K and Klemm, RA (2012) Broadly tunable subterahertz emission from Internal Branches of the current-Voltage characteristics of superconducting bi <inf>2</inf>Sr <inf>2</inf>CaCu <inf>2</inf>O <inf>8+δ</inf> single crystals. Physical Review Letters, 108. 107006-. ISSN 0031-9007

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Abstract

Continuous, coherent subterahertz radiation arises when a dc voltage is applied across a stack of the many intrinsic Josephson junctions in a Bi 2Sr 2CaCu 2O 8+δ single crystal. The active junctions produce an equal number of I-V characteristic branches. Each branch radiates at a slightly tunable frequency obeying the Josephson relation. The overall output is broadly tunable and nearly independent of heating effects and internal cavity frequencies. Amplification by a surrounding external cavity to allow for the development of a useful high-power source is proposed. © 2012 American Physical Society.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:00
Last Modified: 24 Nov 2020 09:53
DOI: 10.1103/PhysRevLett.108.107006