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Characterization of Bernstein modes in quantum dots

Manuel Valin-Rodriguez·Antonio Puente·Llorens Serra·Vidar Gudmundsson·Andrei Manolescu
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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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Manuel Valin-Rodriguez, Antonio Puente, Llorens Serra, Vidar Gudmundsson, Andrei Manolescu. 2002-05-16. Characterization of Bernstein modes in quantum dots. https://doi.org/10.1140/epjb%2Fe2002-00206-x

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