Steps of the Giant Terahertz Photoconductance of a Tunneling Point Contact


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The photoresponse of the conductance of a tunneling quantum point contact to irradiation in the frequency range of 0.5–1.7 THz has been simulated within the theory of photon-assisted tunneling. The simulation has shown that the dependences of the conductance on the Fermi energy exhibit steps corresponding to transitions with the absorption of one, two, or three photons to channels near the top of the tunnel barrier. Under experimentally achievable conditions, the ratio of the photoconductance to the dark value on these steps can reach several orders of magnitude.

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O. Tkachenko

Rzhanov Institute of Semiconductor Physics, Siberian Branch

编辑信件的主要联系方式.
Email: otkach@isp.nsc.ru
俄罗斯联邦, Novosibirsk, 630090

V. Tkachenko

Rzhanov Institute of Semiconductor Physics, Siberian Branch; Novosibirsk State University; Novosibirsk State Technical University

Email: otkach@isp.nsc.ru
俄罗斯联邦, Novosibirsk, 630090; Novosibirsk, 630090; Novosibirsk, 630073

D. Baksheev

Novosibirsk State University

Email: otkach@isp.nsc.ru
俄罗斯联邦, Novosibirsk, 630090

Z. Kvon

Rzhanov Institute of Semiconductor Physics, Siberian Branch; Novosibirsk State University

Email: otkach@isp.nsc.ru
俄罗斯联邦, Novosibirsk, 630090; Novosibirsk, 630090

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