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- W2801071488 abstract "Semiconductor quantum dots (QDs) hold great potential for solid-state light-emitting devices and optical and spin-based quantum information processing, but the efficiency of QD-based spin LEDs remains limited, and their physics not fully understood. Using tunable laser spectroscopy, the authors discover that here an intrinsic obstacle to spin generation is $pphantom{rule{0}{0ex}}hphantom{rule{0}{0ex}}ophantom{rule{0}{0ex}}nphantom{rule{0}{0ex}}ophantom{rule{0}{0ex}}n$ $bphantom{rule{0}{0ex}}ophantom{rule{0}{0ex}}tphantom{rule{0}{0ex}}tphantom{rule{0}{0ex}}lphantom{rule{0}{0ex}}ephantom{rule{0}{0ex}}nphantom{rule{0}{0ex}}ephantom{rule{0}{0ex}}cphantom{rule{0}{0ex}}k$, a lack of phonon-mediated relaxation pathways that can arise in a zero-dimensional system. This insight provides design rules for energy-level engineering in spin-optoelectronic applications of QDs, yielding about a threefold increase in spin generation efficiency, even at elevated temperatures." @default.
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- W2801071488 date "2018-04-26" @default.
- W2801071488 modified "2023-10-15" @default.
- W2801071488 title "Effect of a Phonon Bottleneck on Exciton and Spin Generation in Self-Assembled In1−xGaxAs Quantum Dots" @default.
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- W2801071488 doi "https://doi.org/10.1103/physrevapplied.9.044037" @default.
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