Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/68042
標題: High-sensitivity microwave vector detection at extremely low-power levels for low-dimensional electron systems
作者: Hsieh, W.H.
Kuan, C.H.
Suen, Y.W.
Chang, S.Y.
Li, L.C.
Lee, B.C.
Lee, C.P.
關鍵字: conductivity
期刊/報告no:: Applied Physics Letters, Volume 85, Issue 18, Page(s) 4196-4198.
摘要: We present a high-sensitivity microwave vector detection system for studying the low-dimensional electron system embedded in the gaps of a coplanar waveguide at low temperatures. Using this system, we have achieved 0.005% and 0.001degrees resolutions in amplitude and phase variations, respectively, at 10 GHz in a magnetotransport measurement on a quantum-wire array with an average signal power less than -75 dBm into the sample at 0.3 K. From the measured phase variation, we can distinguish a very tiny change in the induced dipole moment of each quantum wire. (C) 2004 American Institute of Physics.
URI: http://hdl.handle.net/11455/68042
ISSN: 0003-6951
文章連結: http://dx.doi.org/10.1063/1.1814797
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