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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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