The influence of correlation effects on the dilute, two-dimensional electron liquid
Sprache des Vortragstitels:
Englisch
Original Tagungtitel:
Gemeinsame Jahrestagung von SPG und ÖPG
Sprache des Tagungstitel:
Deutsch
Original Kurzfassung:
Compared to bulk systems, in the two-dimensional realization of electron liquids, correlation effects are
much more pronounced, key examples being the collective modes such as plasmons and magnons. Taking
care of these effects leads to substanially lower excitation energies. For highly dilute semiconductor quan
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tum wells it is mandatory to account for dynamic multi-particle fluctuations, which substantially decrease the
collective mode even further and introduce finite lifetime to the mode. A spin sensitive study of the electron
system promises new insights via the longitudinal spin plasmon and a highly interesting ?magnetic antireso
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nance?, where both (spin-spin response and spin-density response) vanish.
Forschungs-