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Giant microwave photoresistance of two-dimensional electron gas | | P. D. Ye
; L. W. Engel
; D. C. Tsui
; J. A. Simmons
; J. R. Wendt
; G. A. Vawter
; J. L. Reno
; | | Date: |
9 Jun 2001 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Abstract: | We measure microwave frequency (4-40 GHz) photoresistance at low magnetic field B, in high mobility 2D electron gas samples, excited by signals applied to a transmission line fabricated on the sample surface. Oscillatory photoresistance vs B is observed. For excitation at the cyclotron resonance frequency, we find an unprecedented, giant relative photoresistance (Delta R)/R of up to 250 percent. The photoresistance is apparently proportional to the square root of applied power, and disappears as the temperature is increased. | | Source: | arXiv, cond-mat/0106181 | | Services: | Forum | Review | PDF | Favorites | |
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