Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: One-step model of photoemission for non-local potentials   The one-step model of valence-band photoemission and inverse photoemission
from single-crystal surfaces is reformulated for generalized (non-local,
complex and energy-dependent) potentials. Thereby, it becomes possible to
account for self-energy corrections taken from many-body electronic-structure
calculations. The original formulation due to Pendry and co-workers employs the
KKR multiple-scattering theory for the calculation of the initial state. This
prevents a straightforward generalization of the one-step model to non-local
potentials. We therefore consider the Dyson equation which is set up within a
muffin-tin-orbitals representation as an alternative to obtain the
initial-state Green function. This approach requires a revision of the
transition-matrix elements which is carried out in detail. The final state is
considered as a time-reversed LEED state as usual. The proposed generalization
of the one-step model allows to distinguish between the bare photocurrent
reflecting the (quasi-particle) band structure and the secondary effects due to
the (dipole) selection rules and due to the wave-vector and energy dependence
of the transition-matrix elements.

33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
2
The categories of this paper are: math
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
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat