Radiation-induced resistance oscillation and instability in GaAS/AlGaAS heterostructure under transverse magnetic fields
Radiation-induced resistance oscillation and instability in GaAS/AlGaAS heterostructure under transverse magnetic fields
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横向磁场下GaAS/AlGaAS异质结构的辐射诱导电阻振荡和不稳定性
DOI:
10.1088/1674-1056/17/6/013
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发表时间:
2008-06
影响因子:
1.7
通讯作者:
Zhou Shi-Ping
中科院分区:
文献类型:
--
作者:
Yang Gui;Tu Bi-Hong;Li Guo-Hui;Zhao Hong-Wei;Zhou Shi-Ping
This paper studies dynamics of a modulation-doped GaAs/AlGaAs heterostructure under transverse magnetic fields and microwave radiations. It finds that negative differential conductivity, due to the real-space electron transfer and delayed dielectric relaxation of the interface potential barrier, can lead to complex behaviours when a relatively small magnetic field is applied. Quasiperiodicity, frequency-locking and the routes from period-doubling to chaos are found. Under a large magnetic field, however, two time-independent homogeneous steady states exist; and the longitudinal resistance of the system shows an interesting oscillation with period tuned by the ratio of microwave radiation frequency ω to the cyclotron frequency ωc and local minima at ω/ωc = integer + 1/4.
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影响因子:
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通讯作者:
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Platero, G
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