Angle-dependent cyclotron resonance in organic Q2D conductors

We show a mechanism for angle-dependent resonant oscillations of high-frequency conductivity and surface impedance in organic Q2D conductors in the presence of strong magnetic field H 0 . In highly anisotropic conducting systems, the drift velocity v D of electrons is an oscillatory function of the...

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Bibliographic Details
Published in:Solid state communications 2010-07, Vol.150 (27), p.1204-1207
Main Author: Stepanenko, D.I.
Format: Article
Language:English
Subjects:
A. Organic crystals
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Conductivity of specific materials
Conductors
Cyclotron resonance
D. Cyclotron resonance
Drift
Electronic transport in condensed matter
Exact sciences and technology
Impedance
Magnetic fields
Mathematical analysis
Oscillations
Physics
Polymers
organic compounds (including organic semiconductors)
Surface chemistry
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Summary:We show a mechanism for angle-dependent resonant oscillations of high-frequency conductivity and surface impedance in organic Q2D conductors in the presence of strong magnetic field H 0 . In highly anisotropic conducting systems, the drift velocity v D of electrons is an oscillatory function of the angle of the magnetic field direction. As a result the location of Landau absorption regions depends on the orientation of H 0 . Under the condition of anomalous skin effect, when the displacement of an electron over the period of electron motion in a magnetic field exceeds skin depth, the Landau damping becomes essential. In this case the angle-dependent oscillations of high-frequency conductivity and surface impedance result from the angular dependence of drift velocity should appear. For the directions of H 0 , such that v D is close to zero, the intensity of cyclotron resonance is of the same order as the intensity of the resonance in a magnetic field parallel to the sample surface.
ISSN:0038-1098
1879-2766
DOI:10.1016/j.ssc.2010.04.009