Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-flip transitions induced by time-dependent electric fields in
  surfaces with strong spin-orbit interaction   We present a comprehensive theoretical investigation of the light absorption
rate at the Pb/Ge(111) surface with strong spin-orbit coupling. Our
calculations show that electron spin-flip transitions cause as much as 6% of
the total light absorption, representing one order of magnitude enhancement
over Rashba-like systems. Thus, it is demonstrated that a substantial part of
the light irradiating this nominally non-magnetic surface is attenuated in spin
flip processes. Remarkably, the spin-flip transition probability is structured
in well defined hot spots within the Brillouin zone where the electron spin
experiences a sudden 90 degree rotation. This mechanism offers the possibility
of an experimental approach to the spin-orbit phenomena by optical means.

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The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys