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Magnetophonon resonance in double quantum wells

Dariusz Płoch ,  Michał Marchewka ,  Mariusz J. Woźny ,  Eugen M. Sheregii 

University of Rzeszow, Institute of Physics, Rejtana 16, Rzeszów 35-310, Poland


Presence of some number of different phonon modes is common feature of lattices  in ternary as well as quaternary solid solutions and in structures with double (DQW) and multi quantum wells (MQW). This peculiarity is rearranged on electron transport in such systems as diversification of electron-phonon interaction and is appeared in Magnetophonon Resonance (MPR) [1] as additional series of peaks what was observed in CdHgTe [2,3], ZnCdHgTe [4] and MnCdHgTe [5]. In case of MPR in MQW and super-lattices except additional series [6] was observed the subtle structure of peaks  too [7].  In this paper are presented and analyze new data of MPR obtained in strong pulse magnetic fields for DQWs based on the GaAs/AlGaAs and  InGaAs/InAlAs hetero-structures [8]. The analysis  is based on correct calculation of the Landau level energies in QWs and on the conception of deformed tetrahedral basic cells of phonon spectra in solid solutions [9]. The subtle structure of the MPR peaks is explained without participation of the interface phonons or confined phonons.

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[2] E.M. Sheregii, JETP Letters, 47, 711, 1988;

[3] E. M. Sheregii, Yu. Ugrin, Sov.Phys.Solid State 32, 27, 1990;

[4] J. Cebulski J. Phys.: Cond. Matter, 10, pp. 8587,1998;

[5] J. Cebulski J. Alloys and Comp., 371, 103, 2004;

[6] P. Gassot et. al. Phys. Rev. B, 54, 14540, 1996;

[7] G. Tomaka Acta Phys. Pol. A, 94, 597, 1998;

[8] E.M. Sheregii et. al., Low Temp. Phys. 30, 1146, 2004;

[9] B.V. Robouch, A. Kisiel, E.M. Sheregii, Phys. Rev. B, 64, 073204, 2001.


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Presentation: Oral at E-MRS Fall Meeting 2008, Symposium J, by Dariusz Płoch
See On-line Journal of E-MRS Fall Meeting 2008

Submitted: 2008-05-13 08:48
Revised:   2009-06-07 00:48