ISSN:
1434-6036
Keywords:
PACS. 73.21.-b Electron states and collective excitations in multilayers, quantum wells, mesoscopic aaand nanoscale systems – 73.20.Mf Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1140/epjb/e2002-00206-x
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