Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhanced charge excitations in electron-doped cuprates by resonant
  inelastic x-ray scattering   Resonant inelastic x-ray scattering (RIXS) tuned for the Cu L edge is a
possible tool to detect charge excitations in cuprate superconductors. We
theoretically investigate the possibility for observing a collective charge
excitation by the RIXS. The RIXS process via the intermediate state inevitably
makes the spectral weight of charge excitation stronger in electron doping than
in hole doping. Electron-hole asymmetry also appears in the dynamical charge
structure factor, showing a new enhanced small-momentum low-energy mode in
electron doping. These facts indicate a possibility of detecting the new charge
mode by RIXS in electron-doped systems.

35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol