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arXiv 1906.02091cond-mat.supr-con
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Ag注入Au薄膜的超导电性

Superconductivity in Ag implanted Au thin film

Manas Kumar Dalai, Braj Bhusan Singh, Salila Kumar Sethy, Satya Prakash Sahoo, Subhankar Bedanta

摘要:

金和银是已知的金属,它们都没有表现出独立的超导性。在这里,我们展示了银注入金薄膜的超导电性。用四探针法测量了不同厚度的Ag注入Au膜的电阻与温度的关系。我们还测量了原始样品(即没有任何植入),以比较传输特性。对于Ag注入的20 nm Au膜,超导转变发生在~2 K(TC)附近(TC以下观察到的最低电阻为~10-6 Ohm)。在增加电流和磁场的作用下,观察到了Tc向低温方向的变化,这支持了超导态。进一步进行了V~I测量以验证其超导性质。另一方面,原始样品在低至1.6 K时显然没有表现出超导性。我们的研究结果为进一步探索这种新型超导体的未来应用开辟了一条途径。

英文摘要:

Au and Ag are known to be metallic and none of them have shown independently superconductivity. Here we show superconductivity in Ag implanted Au thin films. Ag implanted Au films of different thicknesses have been studied using four probe resistance versus temperature measurements. We have also measured the pristine samples (i.e. without any implantation) to compare the transport properties. The superconducting transition occurs around ~2 K (TC) for Ag implanted 20 nm Au film (the lowest resistance observed below TC is ~10-6 Ohm). Change of Tc towards lower temperatures has been observed under the effect of increasing current and magnetic field which endorses the superconducting state. Further the V~I measurements were carried out to verify the superconducting nature. On the other hand, the pristine samples clearly did not exhibit superconductivity down to 1.6 K. Our results open an avenue for further exploring this type of novel superconductivity for future applications.

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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