高取向热解石墨界面处约瑟夫森耦合超导区的证据
Evidence of Josephson-coupled superconducting regions at the interfaces of Highly Oriented Pyrolytic Graphite
摘要：
研究了几百纳米厚的高取向热解石墨（HOPG）薄层的输运性质。电流-电压特性以及在不同的固定输入电流下电压的温度依赖性提供了约瑟夫森耦合超导区域嵌入内部二维界面的证据，在足够低的温度下达到零电阻。结果表明，在取向热解石墨的内部界面处存在临界温度大于100 K的超导区。
英文摘要：
Transport properties of a few hundreds of nanometers thick (in the graphene plane direction) lamellae of highly oriented pyrolytic graphite (HOPG) have been investigated. Current-Voltage characteristics as well as the temperature dependence of the voltage at different fixed input currents provide evidence for Josephson-coupled superconducting regions embedded in the internal two-dimensional interfaces, reaching zero resistance at low enough temperatures. The overall behavior indicates the existence of superconducting regions with critical temperatures above 100 K at the internal interfaces of oriented pyrolytic graphite.
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