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Circular and linear magnetic quantum ratchet effects in dual-grating-gate CdTe-based nanostructures

Faltermeier, Philipp ; Budkin, G. V. ; Hubmann, Stefan ; Belkov, Vassilij ; Golub, Leonid ; Ivchenko, Eougenious ; Adamus, Z. ; Karczewski, G. ; Wojtowicz, Tomasz ; Kozlov, D. A. ; Weiss, Dieter ; Ganichev, Sergey


Circular and linear magnetic quantum ratchet effects induced by alternating electric fields in the terahertz frequency range have been observed. The ratchet current shows 1/B-periodic oscillations with an amplitude, which is much larger than the photocurrent at zero magnetic field and is sensitive to the orientation of the terahertz electric field (linear ratchet) and to the radiation helicity ...


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