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arXiv 0910.2399cond-mat.supr-con
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绝缘YBCO纳米桥的非线性输运性质

Non linear transport properties of an insulating YBCO nano-bridge

L. Fruchter, A. Kazumov, J. Briatico, A. A. Ivanov, V. Nicholaichik

摘要:

我们研究了绝缘亚微米YBa_2Cu_3O_(7-d)桥的输运性质。正如预期的可变范围跳跃绝缘体,运输被发现是非线性的。减小的尺寸允许观察产生随机电报噪声的单个波动器,其动态可以被探索为温度和传输电流的函数。一些记录清楚地表现出三个级别的波动电阻,具有可比的水平分离和相关的动态,这可能是由于存在两个状态或相关的集群电荷陷阱。

英文摘要:

We have investigated the transport properties of an insulating sub-micrometric YBa2Cu3O7-d bridge, patterned on a thin film. As expected for a variable-range-hopping insulator, transport is found non linear. The reduced dimension allows for the observation of an individual fluctuator generating random telegraph noise, which dynamics could be explored as a function of the temperature and transport current. Some recordings clearly exhibit three levels fluctuating resistance, with comparable level separation and correlated dynamics, which likely result from the existence of two states or correlated clustered charge traps.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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