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@ARTICLE{Reindl:875069,
author = {Reindl, Johannes and Volker, Hanno and Breznay, Nicholas P.
and Wuttig, Matthias},
title = {{P}ersistence of spin memory in a crystalline, insulating
phase-change material},
journal = {npj quantum materials},
volume = {4},
number = {1},
issn = {2397-4648},
address = {[London]},
publisher = {Nature Publishing Group},
reportid = {FZJ-2020-01781},
pages = {57},
year = {2019},
abstract = {The description of disorder-induced electron localization
by Anderson over 60 years ago began a quest for novel
phenomena emerging from electronic interactions in the
presence of disorder. Even today, the interplay of
interactions and disorder remains incompletely understood.
This holds in particular for strongly disordered materials
where charge transport depends on ‘hopping’ between
localized sites. Here we report an unexpected spin
sensitivity of the electrical conductivity at the transition
from diffusive to hopping conduction in a material that
combines strong spin-orbit coupling and weak
inter-electronic interactions. In thin films of the
disordered crystalline phase change material SnSb2Te4, a
distinct change in electrical conductance with applied
magnetic field is observed at low temperatures. This
magnetoconductance changes sign and becomes anisotropic at
the disorder-driven crossover from strongly localized
(hopping) to weakly localized (diffusive) electron motion.
The positive and isotropic magnetoconductance arises from
disruption of spin correlations that inhibit hopping
transport. This experimental observation of a recently
hypothesized ‘spin memory’ demonstrates the spin plays a
previously overlooked role in the disorder-driven transition
between weak and strong localization in materials with
strong spin–orbit interactions.},
cin = {PGI-10},
ddc = {530},
cid = {I:(DE-Juel1)PGI-10-20170113},
pnm = {521 - Controlling Electron Charge-Based Phenomena
(POF3-521)},
pid = {G:(DE-HGF)POF3-521},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000502294100001},
doi = {10.1038/s41535-019-0196-6},
url = {https://juser.fz-juelich.de/record/875069},
}