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23 April 2024

» arxiv » 0804.0342

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Quantum ratchet effects induced by terahertz radiation in GaN-based two-dimensional structures
W. Weber ; L. E.Golub ; S. N. Danilov ; J. Karch ; C. Reitmaier ; B. Wittmann ; V. V. Bel'kov ; E. L. Ivchenko ; Z. D. Kvon ; N. Q. Vinh ; A. F. G. van der Meer ; B. Murdin ; S. D. Ganichev ;
Date:	2 Apr 2008
Abstract:	Photogalvanic effects are observed and investigated in hexagonal C(0001)-oriented GaN/AlGaN low-dimensional structures excited by infrared and terahertz radiation. The structures are shown to represent linear quantum ratchets. Experimental and theoretical analysis exhibits that the observed photocurrents are related to lack of inversion center in the GaN-based heterojunctions.
Source:	arXiv, 0804.0342
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