Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efficient orbital angular momentum transfer between plasmons and free
  electrons   Free electrons can efficiently absorb or emit plasmons excited in a thin
conductor, giving rise to multiple energy peaks in the transmitted electron
spectra separated by multiples of the plasmon energy. When the plasmons are
chiral, this can also give rise to transfer of orbital angular momentum (OAM).
Here, we show that large amounts of OAM can be efficiently transferred between
chiral plasmons supported by a thin film and free electrons traversing it.
Under realistic conditions, our predictive simulations reveal efficient
absorption of $\ell\gg1$ chiral plasmons of vorticity $m\gg1$, resulting in an
OAM transfer $\ell m\hbar\gg\hbar$. Our work supports the use of chiral
plasmons sustained by externally illuminated thin films as a way of generating
high-vorticity electrons, resulting in a remarkably large fraction of kinetic
energy associated with motion along the azimuthal direction, perpendicular to
the incident beam.

20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg