Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chiral d density wave ordered pseudo gap phase of
  Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ bilayer. Spin texture and Dzyaloshinskii
  Moriya interaction   We model Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ (Bi2212) bilayer system by an
inversion symmetry broken and time reversal non invariant Bloch Hamiltonian H.
The pseudo-gap phase of the bilayer is assumed to be chiral d density wave
ordered. The focal point of the paper is the theoretical study of the spin
momentum locking (SML), due to the presence of a strong spin orbit coupling in
Bi2212, reported earlier in this phase in a spin and angle resolved
photoemission spectroscopic measurement. The non trivial spin texture in k
space is found tunable by electric field and also by intercalation.The
Dzyaloshinskii Moriya interaction (DMI) coefficient, where DMI being important
energy for chiral textures like magnetic skyrmions, are calculated to set the
stage for detailed studies in a sequel. We also find that,in the nodal region,
in the presence of Zeeman field B , as in a s wave superconductor, for B
greater than or equal to B_c (a critical value) a vortex in this system becomes
a non-Abelian anyon with a Majorana zero mode required for the fault tolerant
quantum computation.

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The categories of this paper are: nucl-ex
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The categories of this paper are: q-alg
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The categories of this paper are: quant-ph
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: mtrl-th
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The categories of this paper are: econ
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: cs
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: q-bio