Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chiral spin texture in the charge-density-wave phase of the correlated
  metallic Pb/Si(111) monolayer   We investigate the 1/3 monolayer $\alpha$-Pb/Si(111) surface by scanning
tunneling spectroscopy (STS) and fully relativistic first-principles
calculations. We study both the high-temperature $\sqrt{3}\times\sqrt{3}$ and
low-temperature $3\times 3$ reconstructions and show that, in both phases, the
spin-orbit interaction leads to an energy splitting as large as $25\%$ of the
valence-band bandwidth. Relativistic effects, electronic correlations and
Pb-substrate interaction cooperate to stabilize a correlated low-temperature
paramagnetic phase with well-developed lower and upper Hubbard bands coexisting
with $3\times3$ periodicity. By comparing the Fourier transform of STS
conductance maps at the Fermi level with calculated quasiparticle interference
from non-magnetic impurities, we demonstrate the occurrence of two large
hexagonal Fermi sheets with in-plane spin polarizations and opposite
helicities.

29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int