An effect of temperature distribution on terahertz phase dynamics in intrinsic Josephson junctions

被引：3

作者：

Asai, Hidehiro ^{[1
]}

Kawabata, Shiro ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Elect & Photon Res Inst ESPRIT, Tsukuba, Ibaraki 3058568, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2013年 / 494卷

关键词：

Intrinsic Josephson junctions; THz emission; Hot spot; SUPERCONDUCTORS; EMISSION;

D O I：

10.1016/j.physc.2013.04.058

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this study, we numerically calculate the temperature distribution and the THz phase dynamics in the mesa-structured intrinsic Josephson junctions (IJJs) using the thermal diffusion equation and the Sine-Gordon equation. We observe that the temperature distribution has a broad peak around the center region of the IJJ mesa. Under a high external current, a "hot spot" where the temperature is locally higher than the superconducting critical temperature appears around this region. The transverse Josephson plasma wave is strongly excited by the inhomogeneous temperature distribution in the mesa. This gives rise to intense THz emission. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：121 / 123

页数：3

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