Superconductivity in alkali-doped fullerene nanowhiskers
Superconductivity in alkali-doped fullerene nanowhiskers
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DOI：
10.1088/0953-8984/28/35/354003
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发表时间：
2016-07
期刊：
影响因子：
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通讯作者：
H. Takeya;T. Konno;Chika Hirata;T. Wakahara;K. Miyazawa;T. Yamaguchi;Masashi Tanaka;Y. Takano
中科院分区：
文献类型：
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作者：
H. Takeya;T. Konno;Chika Hirata;T. Wakahara;K. Miyazawa;T. Yamaguchi;Masashi Tanaka;Y. Takano
在K3.3C60NWs、Rb3.0C60NWs和Cs2.0Rb1.0C60NWs中观察到了碱金属掺杂的富勒烯纳米晶须（C60 NWs）的超导电性，其转变温度分别为17，25和26 K。当在200 °C下热处理24 h时，在K3.3C60NW中观察到几乎完全屏蔽体积分数（~80%）。相比之下，Rb3.0C60 NW和Cs2.0Rb1.0C60 NW的屏蔽分数计算分别为8%和6%。在这里，我们报告了这些AC 60纳米线（A = K3.3，Rb 3.0和Cs2.0Rb 1.0）的超导性能的广泛调查。这些性能进行比较，在相应的常规（单晶或粉末）K-掺杂富勒烯上报道的。我们还评估了这些C60纳米线的临界电流密度下施加的磁场高达50 kOe使用Bean模型。
Superconductivity in alkali metal-doped fullerene nanowhiskers (C60NWs) was observed in K3.3C60NWs, Rb3.0C60NWs and Cs2.0Rb1.0C60NWs with transition temperatures at 17, 25 and 26 K, respectively. Almost full shielding volume fraction (~80%) was observed in K3.3C60NWs when subjected to thermal treatment at 200 °C for a duration of 24 h. In contrast, the shielding fraction of Rb3.0C60NWs and Cs2.0Rb1.0C60NWs were calculated to be 8% and 6%, respectively. Here we report on an extensive investigation of the superconducting properties of these AC60NWs (A = K3.3, Rb3.0 and Cs2.0Rb1.0). These properties are compared to the ones reported on the corresponding conventional (single-crystal or powder) K-doped fullerene. We also evaluated the critical current densities of these C60NWs using the Bean model under an applied magnetic field up to 50 kOe.