Periodic orbit resonances in layered metals in tilted magnetic fields

The frequency dependence of the interlayer conductivity of a layered Fermi liquid in a magnetic field which is tilted away from the normal to the layers is considered. For both quasi-one- and quasi-two-dimensional systems resonances occur when the frequency is a harmonic of the frequency at which the magnetic field causes the electrons to oscillate on the Fermi surface within the layers. The intensity of the different harmonic resonances varies significantly with the direction of the field. The resonances occur for both coherent and weakly incoherent interlayer transport and so their observation does not imply the existence of a three-dimensional Fermi surface.Comment: 4 pages, RevTeX + epsf, 2 figures. Discussion of other work revised. To appear in Phys. Rev. B, Rapid Commun., October 1

Cyclotron resonance in ultra-low-hole-density narrow p-type GaAs/(Al,Ga)As quantum wells

Contains fulltext : 29057.pdf (publisher's version ) (Open Access

Cyclotron resonance in ultra-low-hole-density narrow p-type GaAs/(Al,Ga)As quantum wells

Contains fulltext : 145292.pdf (publisher's version ) (Open Access

Application of FDTD method for the solution of diffraction problems in non-homogeneous dissipative

Solution of a wide class of problems concerning propagation of electromagnetic waves (EMW's) in non-homogeneous dissipative media by analytical methods of diffraction theory is practically impossible. Use of the finite-difference time-domain (FDTD) numerical method, that finds a wide application in recent years due to rapid evolution of computer techniques, is appropriate. This method has already presented itself in a good light for the solution of quite a number of electrodynamic problems

Millimetre Wave response of alpha-(BEDT-TTF)(2)NH4Hg(SCN)(4)

We present the results of a study of the millimetre-wave response of the organic metal alpha-(BEDT-TTF)(2)NH4Hg(SCN)(4), between 500 mK and 4.2 K and in magnetic fields of up to 17 T. Two relatively broad features are interpreted as a two dimensional (2D) cyclotron resonance (CR) with a CR mass m(2D)(CR) = 1.35 +/- 0.1 m(e), and a 1D CR with CR mass m(1D)(CR) = 0.85 +/- 0.05 m(e). Conduction electron spin resonance and magnetic quantum oscillations are also observed. Analysis of the quantum oscillations yields an effective mass of m(RF)* = 2.7 +/- 0.2 m(e)