Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
1997-10-20
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
15 pages, 9 figures, Revtex, to appear in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.57.1668
We investigate the FIR-absorption of short period parallel quantum wires in a perpendicular quantizing magnetic field. The external time-dependent electric field is linearly polarized along the wire modulation. The mutual Coulomb interaction of the electrons is treated self-consistently in the ground state and in the absorption calculation within the Hartree approximation. We consider the effects of a metal gate grating coupler, with the same or with a different period as the wire modulation, on the absorption. The evolution of the magnetoplasmon in the nonlocal region where it is split into several Bernstein modes is discussed in the transition from: narrow to broad wires, and isolated to overlapping wires. We show that in the case of narrow and not strongly modulated wires the absorption can be directly correlated with the underlying electronic bandstructure.
Gudmundsson Vidar
Manolescu Andrei
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