Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charge-carrier dynamics in single-wall carbon nanotube bundles: A
  time-domain study   We present a real-time investigation of ultrafast carrier dynamics in
single-wall carbon nanotube bundles using femtosecond time-resolved
photoelectron spectroscopy. The experiments allow to study the processes
governing the subpicosecond and the picosecond dynamics of non-equilibrium
charge-carriers. On the subpicoseond timescale the dynamics are dominated by
ultrafast electron-electron scattering processes which lead to internal
thermalization of the laser excited electron gas. We find that quasiparticle
lifetimes decrease strongly as a function of their energy up to 2.38 eV above
the Fermi-level - the highest energy studied experimentally. The subsequent
cooling of the laser heated electron gas down to the lattice temperature by
electron-phonon interaction occurs on the picosecond time-scale and allows to
determine the electron-phonon mass enhancement parameter lambda. The latter is
found to be over an order of magnitude smaller if compared, for example, with
that of a good conductor such as copper.

18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph