Excitonic instabilities in semiconductor
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D.C. Marinescu; J.J. Quinn
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Article
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2002
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Elsevier Science
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English
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In a superlattice whose unit cell contains two identical quantum wells distanced by a length b, weak tunneling is allowed to occur both intra-and inter-cell. The intra-cell tunneling leads to the splitting of the electron energy levels in two minibands separated by S AS = ES -EAS, the symmetric-anti