MULTIPHOTON PROCESS OBSERVED IN INTERACTION OF MICROWAVE FIELDS WITH TUNNELING BETWEEN SUPERCONDUCTOR FILMS
MULTIPHOTON PROCESS OBSERVED IN INTERACTION OF MICROWAVE FIELDS WITH TUNNELING BETWEEN SUPERCONDUCTOR FILMS
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DOI：
10.1103/physrev.129.647
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发表时间：
1963-01-01
期刊：
影响因子：
--
通讯作者：
GORDON, JP
中科院分区：
文献类型：
--
作者：
TIEN, PK;GORDON, JP
计算结果定性地解释了Daem和Martin最近在超导二极管中观察到的多光子辅助电子隧穿现象。在我们看来，微波场太弱了，不会在超导体的传导电流中引起任何非线性。因此，这种相互作用不会引起不同波数的电子态之间的跃迁。相反，电子的能量随微波场的绝热变化而变化。这引起了态密度对能量的有效变化，这在隧道电流中得到了戏剧性的说明。
Calculations are made which explain qualitatively the multiphoton-assisted electron tunneling recently observed in superconducting diodes by Dayem and Martin. It seems to us that the microwave field is much too weak to cause any nonlinearities in the conduction current in the superconductors. Thus, the interaction does not cause transitions between electron states with different wave numbers. Rather, the energies of the electrons are varied adiabatically by the microwave fields. This gives rise to effective changes in the density of states versus energy which are dramatically illustrated in the tunneling current.