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Characterization of Bernstein modes in quantum dots

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Abstract:

The dipole modes of non-parabolic quantum dots are studied by means of their current and density patterns as well as with their local absorption distribution. The anticrossing of the so-called Bernstein modes originates from the coupling with electron-hole excitations of the two Landau bands which are occupied at the corresponding magnetic fields. Non-quadratic terms in the potential cause an energy separation between bulk and edge current modes in the anticrossing region. On a local scale the fragmented peaks absorb energy in complementary spatial regions which evolve with the magnetic field.

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Authors and Affiliations

  1. Departament de Fısica, Universitat de les Illes Balears, 07071 Palma de Mallorca, Spain, , , , , , ES

    M. Valın-Rodrıguez, A. Puente & L. Serra

  2. Science Institute, University of Iceland, Dunhaga 3, 107 Reykjavik, Iceland, , , , , , IS

    V. Gudmundsson & A. Manolescu

Authors
  1. M. Valın-Rodrıguez
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  2. A. Puente
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  3. L. Serra
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  4. V. Gudmundsson
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  5. A. Manolescu
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Additional information

Received 3 December 2001 / Received in final form 5 April 2002 Published online 9 July 2002

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Valın-Rodrıguez, M., Puente, A., Serra, L. et al. Characterization of Bernstein modes in quantum dots. Eur. Phys. J. B 28, 111–115 (2002). https://doi.org/10.1140/epjb/e2002-00206-x

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  • DOI: https://doi.org/10.1140/epjb/e2002-00206-x

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