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arXiv 1010.4289cond-mat.supr-con
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低于1 K的MgB2-Based约瑟夫森结的微分电导测量

Differential Conductance Measurements of MgB2-Based Josephson Junctions Below 1 Kelvin

Steve Carabello, Joseph Lambert, Jerome Mlack, Roberto Ramos

摘要:

二硼化镁具有许多有趣的特性,包括其相对较高的临界温度和双带性质。大多数先前的研究MgB 2薄膜约瑟夫森结已进行高于2开尔文。我们报告的亚-1开尔文实验的MgB 2/绝缘体/铅结的a-b平面暴露的电子隧穿。通过在低温下测量微分电导,在该数据中观察到的σ-和π-带隙的结构中的新的细节,与理论预测一致。

英文摘要:

Magnesium diboride has many intriguing characteristics, including its relatively high critical temperature and two-band nature. Most prior studies of MgB2 thin film Josephson junctions have been conducted above 2 Kelvin. We report results of sub-1 Kelvin experiments of MgB2/insulator/Pb junctions whose a-b plane is exposed for electron tunneling. By measuring differential conductance at low temperature, new details in the structure of the sigma- and pi-band gaps are observed in this data, consistent with theoretical predictions.

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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