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Title: Terahertz-wave emission from Bi2212 intrinsic Josephson junctions: A review on recent progress
Authors: Kakeya, Itsuhiro  kyouindb  KAKEN_id
Wang, Huabing
Author's alias: 掛谷, 一弘
Keywords: high-Tc cuprate
intrinsic Josephson junction
terahertz electromagnetic wave
synchronisation effect
self-heating
Issue Date: 16-May-2016
Publisher: IOP Publishing Ltd.
Journal title: Superconductor Science and Technology
Volume: 29
Issue: 7
Thesis number: 073001
Abstract: Emission of terahertz (THz) electromagnetic (EM) waves from a high critical temperature (T c) superconductor intrinsic Josephson junction (IJJ) is a new and promising candidate for practical applications of superconducting devices. From the engineering viewpoint, the IJJ THz source is competitive against the present semiconducting THz sources such as quantum cascade lasers (QCLs) and resonance tunnelling diode oscillators because of its broad tunable frequency range and ease of the fabrication process for the device. The emitted EM waves are considered to be coherent because the emission is yielded by synchronisation of thousand stacked IJJs consisting of the mesa device. This synchronisation is peculiar: the resonant frequency of each IJJ is distributed because the cross section of the mesa device is trapezoidal in shape. One of the key features of the synchronisation mechanism is the temperature inhomogeneity of the emitting device. In this topical review, we describe the recent progress in studies of IJJ THz sources with particular emphasis on the relevance of the temperature inhomogeneity to the synchronisation and the emission intensity. This review is of specific interest because the IJJ THz source shows the rich variety of functions due to self-heating which has always been a detrimental feature in the present superconducting devices. Moreover, the thermal managements used for IJJ THz sources will be common with those of other semiconducting devices such as QCLs. In addition, this review is to invite the readers into related research through the detailed descriptions of experimental procedures.
Rights: This is an author-created, un-copyedited version of an article accepted for publication in 'Superconductor Science and Technology'. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/0953-2048/29/7/073001.
The full-text file will be made open to the public on 16 May 2017 in accordance with publisher's 'Terms and Conditions for Self-Archiving'.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/216928
DOI(Published Version): 10.1088/0953-2048/29/7/073001
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