Hot spots and waves in Bi2Sr2CaCu2O8 intrinsic Josephson junction stacks: a study by low temperature scanning laser microscopy.
Hot spots and waves in Bi2Sr2CaCu2O8 intrinsic Josephson junction stacks: a study by low temperature scanning laser microscopy.
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DOI：
10.1103/physrevlett.102.017006
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发表时间：
2008-07
影响因子：
8.6
通讯作者：
Huabing Wang;S. Guénon;Jie Yuan;A. Iishi;S. Arisawa;T. Hatano;T. Yamashita;D. Koelle;R. Kle
中科院分区：
文献类型：
--
作者：
Huabing Wang;S. Guénon;Jie Yuan;A. Iishi;S. Arisawa;T. Hatano;T. Yamashita;D. Koelle;R. Kle
最近，它已被证明，在Bi2Sr2CaCu2O8的本征约瑟夫森结的大堆栈发射同步太赫兹辐射，同步大概是由腔共振触发。为了研究这种效应，我们使用低温扫描激光显微镜图像电场分布。我们验证了腔模式的外观在低偏置和高输入功率的制度，我们发现驻波图案创建通过与热点的相互作用，可能指向一个新的模式产生同步辐射的本征约瑟夫森结堆栈。
Recently, it has been shown that large stacks of intrinsic Josephson junctions in Bi2Sr2CaCu2O8 emit synchronous THz radiation, the synchronization presumably triggered by a cavity resonance. To investigate this effect we use low temperature scanning laser microscopy to image electric field distributions. We verify the appearance of cavity modes at low bias and in the high input-power regime we find that standing-wave patterns are created through interactions with a hot spot, possibly pointing to a new mode of generating synchronized radiation in intrinsic Josephson junction stacks.