Song, A. M. and Manus, S. and Streibl, M. and Lorke, A. and Kotthaus, J.P. and Wegscheider, Werner and Bichler, Max (1999) A nonlinear transport device with no intrinsic threshold. Superlattices and Microstructures 25 (1-2), pp. 269-272.
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A ballistic rectifier, based on guidance of carriers by a triangular antidot, is shown to be both experimentally and theoretically capable of operating for weak signals. At T = 4.2 K, we find that the ballistic rectifier works when the input voltage is as low as 0.5 mV, the same order ofkBT. Based on an extended Landauer–Büttiker formula for nonlinear transport, we show that even when the input signal is much smaller thankBT, temperature has no obvious influence on the rectification effect.
|Institutions:||Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
|Keywords:||nonlinearity; ballistic transport; rectification; threshold|
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||30 Nov 2009 13:10|
|Last Modified:||20 Jul 2011 22:08|