Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electron and hole g factors in InAs/InAlGaAs self-assembled quantum dots
  emitting at telecom wavelengths   We extend the range of quantum dot (QD) emission energies where electron and
hole $g$ factors have been measured to the practically important telecom range.
The spin dynamics in InAs/In$_{0.53}$Al$_{0.24}$Ga$_{0.23}$As self-assembled
QDs with emission wavelengths at about 1.6 $\mu$m grown on InP substrate is
investigated by pump-probe Faraday rotation spectroscopy in a magnetic field.
Pronounced oscillations on two different frequencies, corresponding to the QD
electron and hole spin precessions about the field are observed from which the
corresponding $g$ factors are determined. The electron $g$ factor of about
$-1.9$ has the largest negative value so far measured for III-V QDs by optical
methods. This value, as well as the $g$ factors reported for other III-V QDs,
differ from those expected for bulk semiconductors at the same emission
energies, and this difference increases significantly for decreasing energies.

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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
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The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
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The categories of this paper are: acc-phys
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
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The categories of this paper are: q-fin
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The categories of this paper are: mtrl-th
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The categories of this paper are: stat
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The categories of this paper are: funct-an