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Highly superlinear giant terahertz photoconductance in GaAs quantum point contacts in the deep tunneling regime

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Otteneder, Maximilian ; Hild, M. ; Kvon, Z. D. ; Rodyakina, E. E. ; Glazov, Mikhail M. ; Ganichev, Sergey
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Date of publication of this fulltext: 29 Mar 2022 08:23


A highly superlinear in radiation intensity photoconductance induced by continuous wave terahertz laser radiation with low intensities has been observed in quantum point contacts made of GaAs quantum wells operating in the deep tunneling regime. For very low values of the normalized dark conductance G(dark)/G(0) approximate to 10(-6), with the conductance quantum G(0) = 2e(2)/h, the ...


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