Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Origin of Rashba spin-splitting and strain tunability in ferroelectric
  bulk CsPbF$_3$   Spin-orbit coupling (SOC) in conjunction with broken inversion symmetry acts
as a key ingredient for several intriguing quantum phenomena viz. persistent
spin textures, topological surface states and Rashba-Dresselhaus (RD) effects.
The coexistence of spontaneous polarization and the RD effect in ferroelectric
materials enables the electrical control of spin degree of freedom. In light of
this, we explore here the ferroelectric lead halide perovskite viz. CsPbF$_3$
as a potential candidate in the field of spintronics by employing
state-of-the-art first-principles based methodologies viz. density functional
theory (DFT) with semi-local and hybrid functional (HSE06) combined with
spin-orbit coupling (SOC) and many-body perturbation theory (G$_0$W$_0$). For a
deeper understanding of the observed spin-splitting, we have analyzed the spin
textures within the combined framework of DFT and $\textbf{k.p}$ model
Hamiltonian. The latter confirms that there is no out of plane spin component
indicating that the Rashba splitting dominates over Dresselhaus splitting in
this system. Owing to the presence of Pb-6$p$ orbital in conduction band, the
large value of Rashba coefficient ($\alpha_R$) at conduction band minimum (CBm)
is noticed in comparison to that of at the valence band maximum (VBM). Notably,
we also observe that strength of Rashba spin-splitting can be substancially
tuned on application of uniaxial strain ($\pm5\%$). This finding will further
pave the path for perovskite-based spintronics devices.

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The categories of this paper are: stat
29
The categories of this paper are: funct-an
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-bio
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The categories of this paper are: ao-sci
3
The categories of this paper are: physics
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The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-ex
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The categories of this paper are: plasm-ph
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The categories of this paper are: cmp-lg