Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Towards coherent spin precession in pure-spin current   Non-local spin injection in lateral spin valves generates a pure spin current
which is a diffusive flow of spins (i.e. spin angular momentums) with no net
charge flow. The diffusive spins lose phase coherency in precession while
undergoing frequent collisions and these events lead to a broad distribution of
the dwell time in a transport channel between the injector and the detector.
Here we show the lateral spin-valves with dual injectors enable us to detect a
genuine in-plane precession signal from the Hanle effect, demonstrating the
phase coherency in the in-plane precession is improved with an increase of the
channel length. The coherency in the spin precession shows a universal behavior
as a function of the normalized separation between the injector and the
detector in material-independent fashion for metals and semiconductors
including graphene.

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The categories of this paper are: stat
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The categories of this paper are: dg-ga
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The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
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The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
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The categories of this paper are: quant-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: econ
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The categories of this paper are: chao-dyn
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The categories of this paper are: gr-qc
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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-th
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The categories of this paper are: cmp-lg