Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin interferometry with electrons in nanostructures: A road to
  spintronic devices   The wave nature of electrons in semiconductor nanostructures results in
spatial interference effects similar to those exhibited by coherent light. The
presence of spin-orbit coupling renders interference in spin space and in real
space interdependent, making it possible to manipulate the electron's spin
state by addressing its orbital degree of freedom. This suggests the utility of
electronic analogs of optical interferometers as blueprints for new spintronics
devices. We demonstrate the usefulness of this concept using the Mach-Zehnder
interferometer as an example. Its spin-dependent analog realizes a
spin-controlled field-effect transistor without magnetic contacts and may be
used as a quantum logical gate.

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The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
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The categories of this paper are: adap-org
16
The categories of this paper are: stat
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The categories of this paper are: econ
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The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
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The categories of this paper are: q-fin
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The categories of this paper are: nucl-ex
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The categories of this paper are: solv-int