Ultralong spin lifetimes in one-dimensional semiconductor nanowires

We experimentally demonstrate ultralong spin lifetimes of electrons in the one-dimensional (1D) quantum limit of semiconductor nanowires. Optical probing of single wires of different diameters reveals an increase in the spin relaxation time by orders of magnitude as the electrons become increasingly...

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Veröffentlicht in:Applied physics letters 2019-05, Vol.114 (20)
Hauptverfasser: Dirnberger, Florian, Kammermeier, Michael, König, Jan, Forsch, Moritz, Faria Junior, Paulo E., Campos, Tiago, Fabian, Jaroslav, Schliemann, John, Schüller, Christian, Korn, Tobias, Wenk, Paul, Bougeard, Dominique
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Sprache:eng
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Zusammenfassung:We experimentally demonstrate ultralong spin lifetimes of electrons in the one-dimensional (1D) quantum limit of semiconductor nanowires. Optical probing of single wires of different diameters reveals an increase in the spin relaxation time by orders of magnitude as the electrons become increasingly confined until only a single 1D sub-band is populated after thermalization. We find the observed spin lifetimes of more than 200 ns to result from the robustness of 1D electrons against major spin relaxation mechanisms, highlighting the promising potential of these wires for long-range transport of coherent spin information.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.5096970