Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photoelectron spin-polarization-control in the topological insulator
  Bi2Se3   We study the manipulation of the photoelectron spin-polarization in
Bi$_2$Se$_3$ by spin- and angle-resolved photoemission spectroscopy. General
rules are established that enable controlling the spin-polarization of
photoemitted electrons via light polarization, sample orientation, and photon
energy. We demonstrate the $\pm$100% reversal of a single component of the
measured spin-polarization vector upon the rotation of light polarization, as
well as a full three-dimensional manipulation by varying experimental
configuration and photon energy. While a material-specific density-functional
theory analysis is needed for the quantitative description, a minimal
two-atomic-layer model qualitatively accounts for the spin response based on
the interplay of optical selection rules, photoelectron interference, and
topological surface-state complex structure. It follows that photoelectron
spin-polarization control is generically achievable in systems with a
layer-dependent, entangled spin-orbital texture.

23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex