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Paper detail

Anomalous Suppression of Valley Splittings in Lead Salt Nanocrystals without Inversion Center

Atomistic sp3d5s* tight-binding theory of PbSe and PbS nanocrystals is developed. It is demonstrated, that the valley splittings of confined electrons and holes strongly and peculiarly depend on the geometry of a nanocrystal. When the nanocrystal lacks a microscopic center of inversion and has T_d symmetry, the splitting is strongly suppressed as compared to the more symmetric nanocrystals with O_h symmetry, having an inversion center.

preprint2011arXivOpen access
A. N. PoddubnyM. O. NestoklonS. V. Goupalov
cond-mat.mes-hall
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Open access3 authors1 topic
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A. N. PoddubnyM. O. NestoklonS. V. Goupalov

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