Polarization-dependent plasmonic photocurrents in two-dimensional electron systems

Journal Article · Mon Jun 27 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4954948· OSTI ID:22590646

Popov, V. V., E-mail: [e-mail] ^[1]; Saratov State University, Saratov 410012 ^[2]; Saratov Scientific Center of the Russian Academy of Sciences, Saratov 410028 ^[2]

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1. Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Saratov 410019 (Russian Federation)
2. (Russian Federation)

Plasmonic polarization dependent photocurrents in a homogeneous two-dimensional electron system are studied. Those effects are completely different from the photon drag and electronic photogalvanic effects as well as from the plasmonic ratchet effect in a density modulated two-dimensional electron system. Linear and helicity-dependent contributions to the photocurrent are found. The linear contribution can be interpreted as caused by the longitudinal and transverse plasmon drag effect. The helicity-dependent contribution originates from the non-linear electron convection and changes its sign with reversing the plasmonic field helicity. It is shown that the helicity-dependent component of the photocurrent can exceed the linear one by several orders of magnitude in high-mobility two-dimensional electron systems. The results open possibilities for all-electronic detection of the radiation polarization states by exciting the plasmonic photocurrents in two-dimensional electron systems.

• OSTI ID: 22590646
• Journal Information: Applied Physics Letters, Vol. 108, Issue 26; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DENSITY
DETECTION
DRAG
ELECTROPHORESIS
HELICITY
MOBILITY
NONLINEAR PROBLEMS
PHOTOCURRENTS
PHOTONS
PLASMONS
POLARIZATION
TWO-DIMENSIONAL SYSTEMS