Microwave induced zero-conductance state in a Corbino geometry two-dimensional electron gas with capacitive contacts
Microwave induced zero-conductance state in a Corbino geometry two-dimensional electron gas with capacitive contacts
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DOI：
10.1063/1.3483765
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发表时间：
2010-08-23
影响因子：
4
通讯作者：
Dmitriev, D. V.
中科院分区：
文献类型：
--
作者：
Bykov, A. A.;Marchishin, I. V.;Dmitriev, D. V.
在温度T=1.6K，磁场B高达0.5T的情况下，用具有电容接触的Corbino几何方法研究了选择性掺杂的GaAsAlAs异质结中二维电子气的微波感生光电导.在微波辐射下，观察到了与欧姆接触类似的零电导状态.结果表明，欧姆接触在观察微波辐射引起的零导电态时不起重要作用。(C)2010年美国物理研究所。[DOI：10.1063/1.3483765]
Microwave induced photoconductivity of a two-dimensional electron gas in selectively doped GaAs/AlAs heterostructures has been studied using the Corbino geometry with capacitive contacts at a temperature T=1.6 K and magnetic field B up to 0.5 T. Zero-conductance states have been observed in the samples under study subject to microwave radiation, similarly to the samples with Ohmic contacts. It has been shown that Ohmic contacts do not play a significant role for observation of zero-conductance states induced by microwave radiation. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3483765]