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Collective excitations in exciton crystal

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Abstract

Crystal phase of indirect excitons formed by spatially separated electrons and holes in coupled quantum wells is analyzed. The collective mode spectrum of the exciton crystal at zero and nonzero agnetic fields is found. The spectrum consists of two optical and two acoustical modes (transverse and longitudinal in each case). We also study changes of the dipole crystal collective excitations at the transition exciton crystal-electron-hole plasma.

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Authors and Affiliations

  1. Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia

    D. V. Kulakovskii

  2. Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow oblast, 142092, Russia

    Yu. E. Lozovik

  3. Institute of Semiconductor Physics, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    A. V. Chaplik

Authors
  1. D. V. Kulakovskii
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  2. Yu. E. Lozovik
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  3. A. V. Chaplik
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From Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 126, No. 4, 2004, pp. 979–985.

Original zEnglish Text Copyright © 2004 by Kulakovskii, Lozovik, Chaplik.

This article was submitted by authors in English.

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Kulakovskii, D.V., Lozovik, Y.E. & Chaplik, A.V. Collective excitations in exciton crystal. J. Exp. Theor. Phys. 99, 850–855 (2004). https://doi.org/10.1134/1.1826178

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  • DOI: https://doi.org/10.1134/1.1826178

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