Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Impact of ex-situ rapid thermal annealing on the magneto-optical
  properties and the oscillator strength of In(Ga)As quantum dots   We discuss the influence of a rapid thermal annealing step on the
magneto-optical emission properties of In(Ga)As/GaAs quantum dots. We map out a
strong influence of the growth- and anneling parameters on the quantum
excitons' effective Land\'e g-factors and in particular on their diamagnetic
coefficients, which we directly correlate with the modification of the emitters
shape and material composition. In addition, we study the excitons' spontaneous
emission lifetime as a function of the annealing temperature and the dot
height, and observe a strong increase of the emission rate with the quantum dot
volume. The corresponding increase in oscillator strenth yields fully
consistent results with the analysis of the diamagenic behavior. In particular,
we demonstrate that a rapid thermal annealing step of 850$^\circ$ C can be
employed to increase the oscillator strength of as-grown InAs/GaAs QDs by more
than a factor of $2$.

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The categories of this paper are: math-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin
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The categories of this paper are: patt-sol
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The categories of this paper are: math
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The categories of this paper are: comp-gas
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The categories of this paper are: econ
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The categories of this paper are: acc-phys
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The categories of this paper are: cmp-lg
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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga