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Observation of plasma and magnetoplasma resonances of two-dimensional electrons in a single MgZnO/ZnO heterojunction

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Abstract

The magnetoluminescence of the two-dimensional electron system in a single Mg x Zn1 − x O/ZnO hetero-junction (x = 0.02) at a temperature of 0.3 K in magnetic fields up to 14 T has been studied. The concentration of two-dimensional electrons in the structure under study has been determined from the oscillations of the luminescence intensity as a function of the magnetic field. The value thus obtained is close to the one derived from transport measurements. The resonance corresponding to plasma excitations of two-dimensional electrons has been observed using optical detection of microwave absorption. In a magnetic field, the lower branch of magnetoplasma excitations, which corresponds to the propagation of edge magnetoplasmons in a structure with nearly square geometry, has been observed and investigated.

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Authors and Affiliations

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

    V. E. Kozlov, A. B. Van’kov, S. I. Gubarev & I. V. Kukushkin

  2. Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, 113-8656, Tokyo, Japan

    J. Falson, Y. Kozuka & M. Kawasaki

  3. RIKEN Center for Emergent Matter Science (CEMS), 351-0198, Wako, Japan

    D. Maryenko & M. Kawasaki

  4. Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan

    A. Tsukazaki

  5. PRESTO, Japan Science and Technology Agency (JST), 102-0075, Tokyo, Japan

    A. Tsukazaki

  6. Max-Planck-Institut für Festkörperforschung, D-70569, Stuttgart, Germany

    I. V. Kukushkin & J. H. Smet

Authors
  1. V. E. Kozlov
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  2. A. B. Van’kov
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  3. S. I. Gubarev
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  4. I. V. Kukushkin
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  5. J. Falson
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  6. D. Maryenko
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  7. Y. Kozuka
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  8. A. Tsukazaki
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  9. M. Kawasaki
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  10. J. H. Smet
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Additional information

Original Russian Text © V.E. Kozlov, A.B. Van’kov, S.I. Gubarev, I.V. Kukushkin, J. Falson, D. Maryenko, Y. Kozuka, A. Tsukazaki, M. Kawasaki, J.H. Smet, 2013, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2013, Vol. 98, No. 4, pp. 251–254.

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Kozlov, V.E., Van’kov, A.B., Gubarev, S.I. et al. Observation of plasma and magnetoplasma resonances of two-dimensional electrons in a single MgZnO/ZnO heterojunction. Jetp Lett. 98, 223–226 (2013). https://doi.org/10.1134/S0021364013170074

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  • DOI: https://doi.org/10.1134/S0021364013170074

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