Long Spin-Relaxation Times in a Transition-Metal Atom in Direct Contact to a Metal Substrate

Nano Letters
Jan HermenauJens Wiebe

Abstract

Long spin-relaxation times are a prerequisite for the use of spins in data storage or nanospintronics technologies. An atomic-scale solid-state realization of such a system is the spin of a transition-metal atom adsorbed on a suitable substrate. For the case of a metallic substrate, which enables the direct addressing of the spin by conduction electrons, the experimentally measured lifetimes reported to date are on the order of only hundreds of femtoseconds. Here, we show that the spin states of iron atoms adsorbed directly on a conductive platinum substrate have a surprisingly long spin-relaxation time in the nanosecond regime, which is comparable to that of a transition metal atom decoupled from the substrate electrons by a thin decoupling layer. The combination of long spin-relaxation times and strong coupling to conduction electrons implies the possibility to use flexible coupling schemes to process the spin information.

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Citations

Jul 19, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Julen Ibañez-AzpirozSamir Lounis
Oct 12, 2018·Physical Chemistry Chemical Physics : PCCP·Yu WangJinlong Yang
Jun 14, 2019·Nature Communications·Jan HermenauJens Wiebe
May 10, 2020·Physical Review Letters·Markus TernesWolf-Dieter Schneider
Mar 29, 2020·Science Advances·T MoorsomO Cespedes
Feb 25, 2021·Nanotechnology·Jan NavrátilMichal Otyepka
Aug 13, 2021·Science Advances·Max HänzeSebastian Loth

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