標題: High-sensitivity microwave vector detection at extremely low-power levels for low-dimensional electron systems
作者: Hsieh, WH
Kuan, CH
Suen, YW
Chang, SY
Li, LC
Lee, BC
Lee, CP
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
公開日期: 1-十一月-2004
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://dx.doi.org/10.1063/1.1814797
http://hdl.handle.net/11536/25657
ISSN: 0003-6951
DOI: 10.1063/1.1814797
期刊: APPLIED PHYSICS LETTERS
Volume: 85
Issue: 18
起始頁: 4196
結束頁: 4198
顯示於類別:期刊論文


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