Superconductivity of freestanding tungsten nanofeatures grown by focused-ion-beam.
Superconductivity of freestanding tungsten nanofeatures grown by focused-ion-beam.
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DOI：
10.1166/jnn.2010.2850
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发表时间：
2010-11
影响因子：
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通讯作者：
Wuxia Li;C. Gu;P. Warburton
中科院分区：
文献类型：
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作者：
Wuxia Li;C. Gu;P. Warburton
独立的钨复合纳米特征生长的聚焦离子束诱导沉积与1 pA的离子束电流。温度相关的电测量表明，飞行纳米级钨是导电的，室温电阻率为550微Ω cm。它也是超导的，Tc高于5.1 K，可以重复热循环。我们的研究结果表明，FIB直写三维钨复合材料可能是一个潜在的方法来制造垂直纳米器件和无掩模超导器件。
Freestanding tungsten composite nanofeatures were grown by focused-ion-beam-induced deposition with 1 pA ion beam current. The temperature dependent electrical measurements show that the flying nanoscale tungsten is conducting with a room temperature resistivity of 550 micro omega cm. It is also superconducting with a Tc, above 5.1 K and can be repeatedly thermally cycled. Our results suggest that FIB direct-writing of three-dimensional tungsten composites might be a potential approach to fabricate vertical nanodevices and mask-free superconducting devices.