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Title: Effect of thermal inhomogeneity for terahertz radiation from intrinsic Josephson junction stacks of Bi[2]Sr[2]CaCu[2]O[8]+δ
Authors: Kakeya, Itsuhiro  kyouindb  KAKEN_id
Omukai, Yuta
Yamamoto, Takashi
Kadowaki, Kazuo
Suzuki, Minoru
Issue Date: 12-Jun-2012
Publisher: AIP Publishing
Journal title: Applied Physics Letters
Volume: 100
Issue: 24
Thesis number: 242603
Abstract: Terahertz radiation from the mesa structures of Bi[2]Sr[2]CaCu[2]O[8]+ δ is detected in samples with thin electrodes <100 nm. In samples with thick electrodes≃400 nm, neither radiations nor voltage jumps in current-voltage characteristics are detected. This suggests that the thin electrode helps excite the Josephsonplasma oscillation as a result of the poor heat flow through the electrode. The shielding effect by the electrode is not essential. We consider that the local temperature rise is the origin of the synchronization of the phase kink for terahertz radiation.
Rights: © 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
DOI(Published Version): 10.1063/1.4727899
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