Quantized conductance atomic switch
Quantized conductance atomic switch
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DOI：
10.1038/nature03190
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发表时间：
2005-01-06
期刊：
影响因子：
64.8
通讯作者：
Aono, M
中科院分区：
文献类型：
--
作者：
Terabe, K;Hasegawa, T;Aono, M
近年来，人们研究了多种纳米级器件(1-7)，可以克服当前半导体器件的物理和经济限制(8)。为了引起技术上的兴趣，这些“纳米设备”的能源消耗和制造成本必须较低。这里我们报道了一种新型的纳米器件--量子电导原子开关(QCAS)，它满足了这些要求。QCAS的工作原理是控制两个电极之间交叉点的原子桥的形成和湮灭。两根导线之间的距离约为1 nm，其中一根是固体电解液导线，原子桥是由它形成的。我们证明了这种准分子激光器可以在室温和空气中以1 MHz的频率和较小的工作电压(600 MV)在“开”和“关”状态之间切换。通过将固体电解液导线与金属电极交叉，也可以很容易地制造基本逻辑电路。
A large variety of nanometre-scale devices have been investigated in recent years(1-7) that could overcome the physical and economic limitations of current semiconductor devices(8). To be of technological interest, the energy consumption and fabrication cost of these 'nanodevices' need to be low. Here we report a new type of nanodevice, a quantized conductance atomic switch (QCAS), which satisfies these requirements. The QCAS works by controlling the formation and annihilation of an atomic bridge at the crossing point between two electrodes. The wires are spaced approximately 1 nm apart, and one of the two is a solid electrolyte wire from which the atomic bridges are formed. We demonstrate that such a QCAS can switch between 'on' and 'off ' states at room temperature and in air at a frequency of 1 MHz and at a small operating voltage (600 mV). Basic logic circuits are also easily fabricated by crossing solid electrolyte wires with metal electrodes.