Collective excitations in semiconductor
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Wilson B. da Costa; Umbelino de Freitas; Nelson Studart
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Article
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1994
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Elsevier Science
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English
β 143 KB
Collective excitations in semiconductor superlattices are studied beyond the randomphase approximation (RPA). The Singwi, 'Tosi, Land and SjΓΆlander (STLS) theory, which accounts for exchange and short-range correlations effects through an effective potential depending on the structure factor, is gen