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Volumn 79, Issue 16, 2009, Pages

Density-matrix theory of the optical dynamics and transport in quantum cascade structures: The role of coherence

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EID: 66749146766     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.79.165322     Document Type: Article
Times cited : (63)

References (63)
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    • Note that this result depends on the gauge for the exciting field which is used. In the case of the Lorenz gauge, it is necessary to take into account a phase factor when transforming the density matrix between different periods.
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    • For the barrier widths marked by dashed lines (open circle in the current density), the inclusion of an additional low-energy scattering mechanism is necessary to achieve convergence of the current (see the discussion in the text). The value of the current density obtained in this way is approximately independent of the strength of the additional coupling when determined from the transient, in accordance with earlier results (Refs.). The resulting, unphysically large total broadening Γ does not lead to qualitatively new regimes of interest and is thus not considered further.
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.