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High-frequency impact ionization and nonlinearity of photocurrent induced by intense terahertz radiation in HgTe-based quantum well structures

Hubmann, S., Gebert, S., Budkin, G. V., Bel'kov, V. V., Ivchenko, E. L., Dmitriev, A. P., Baumann, S., Otteneder, M., Ziegler, J., Disterheft, D., Kozlov, D. A., Mikhailov, N. N., Dvoretsky, S. A., Kvon, Z. D., Weiss, Dieter and Ganichev, S. D. (2019) High-frequency impact ionization and nonlinearity of photocurrent induced by intense terahertz radiation in HgTe-based quantum well structures. Phys. Rev. B 99, 085312.

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Date of publication of this fulltext: 18 Jul 2019 13:34

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Other URL: https://link.aps.org/doi/10.1103/PhysRevB.99.085312, https://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.085312


Abstract

We report on a strong nonlinear behavior of the photogalvanics and photoconductivity under excitation of HgTe quantum wells (QWs) by intense terahertz (THz) radiation. The increasing radiation intensity causes an inversion of the sign of the photocurrent and transition to its superlinear dependence on the intensity. The photoconductivity also shows a superlinear raise with the intensity. We show ...

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Item type:Article
Date:February 2019
Institutions:Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev
Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss
Projects:SFB 1277: Emergente relativistische Effekte in der Kondensierten Materie: Von grundlegenden Aspekten zu elektronischer Funktionalität, ERC No. 787515, K-NW-2013-247
Identification Number:
ValueType
10.1103/PhysRevB.99.085312DOI
Dewey Decimal Classification:500 Science > 530 Physics
Status:Published
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Item ID:40540
Owner only: item control page

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