Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin textures in strongly coupled electron spin and magnetic or nuclear
  spin systems in quantum dots   Controlling electron spins strongly coupled to magnetic and nuclear spins in
solid state systems is an important challenege in the field of spintronics and
quantum computation. We show here that electron droplets with no net spin in
semiconductor quantum dots strongly coupled with magnetic ion/nuclear spin
systems break down at low temperature and form a non-trivial anti-ferromagnetic
spatially ordered spin-texture of magneto-polarons. The spatially ordered
combined electron-magnetic ion spin-texture, associated with spontaneous
symmetry-breaking in the parity of electronic charge density and magnetization
of magnetic ions, emerge from both ab-initio density functional approach to the
electronic system coupled with mean-field approximation for the
magnetic/nuclear spin system and fully mircoscopic exact diagonalization of
small systems. The predicted phase diagram determines the critical temperature
as a function of coupling strength and identifies possible phases of the
strongly coupled spin system. This prediction may arrest fluctuations in spin
system and open the way to control, manipulate and prepare magnetic and nuclear
spin ensembles in semiconductor nanostructures.

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The categories of this paper are: cs
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The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
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The categories of this paper are: adap-org
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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg