Metal-Insulator-Metal Tunneling
Metal-Insulator-Metal Tunneling
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DOI：
10.1007/978-1-4684-1752-4_3
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发表时间：
1969
期刊：
影响因子：
--
通讯作者：
I. Giaever
中科院分区：
文献类型：
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作者：
I. Giaever
原则上，进行隧道实验是很容易的。想象一下图1所示的简单直流电路，它由两个平行的电容极板连接到一个电池上。电路中还有一个电流表、一个电压表和一些电阻，这样我们就可以测量通过电容器的电流，同时测量和改变施加到电容器极板上的电压。通常，我们不期望在电容器极板之间流动直流电流；然而，如果电容器极板之间的间隔非常近(大约50？)，我们发现用普通电流表可以很容易地检测到直流电流，并且我们可能会得到有点如图1所示的电流-电压特性。流经电容器极板之间的薄绝缘体的直流电流是隧道电流。
In principle, it is easy to perform a tunneling experiment. Imagine the simple DC circuit shown in Fig. 1, consisting of two parallel capacitor plates connected to a battery. There are also an ammeter, a voltmeter, and some resistors in the circuit so that we can measure the current through the capacitor and both measure and vary the voltage applied to the capacitor plates. Normally, we do not expect a DC current to flow between the capacitor plates; however, if the capacitor plates are spaced very close together (on the order of 50 Å),we find that a DC current is easily detectable with an ordinary ammeter, and we may get a current—voltage characteristic somewhat as shown in Fig. 1. The DC current flowing through the thin insulator between the capacitor plates is a tunneling current.