Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CDW signatures in the electronic structure of LaSb2 at 13 K and
  metal-insulator transition   Light rare-earth antimonide LaSb2 is a material susceptible to nesting and
exhibits a Charge Density Wave (CDW) at 355 K as well as superconductivity
below 1.2 K. In the seek for additional CDW transitions, we have studied the
temperature-dependent of LaSb2 at 200 and 13 K and infer CDW manifestations by
combining angle-resolved photoemission spectroscopy (ARPES) measurements and
density functional theory (DFT) calculations. ARPES measurements at 200 K show
a metallic system while it appears to be semiconducting at 13 K, at odds with
existing resistivity measurements. At 13 K, ARPES shows the band folding of the
inner Fermi surface pockets, with considerable spectral weight on the folded
band. We find a nesting vector at q = 0.25$\pm$0.02 {\AA} -1. In addition, we
observe Umklapps of other bands due to the onset of the new periodicity,
together with a semiconducting behavior in the whole reciprocal space.
Calculations demonstrate that the folded band is associated with the La-Sb
layer and that in-plane distortion is the most probable structural modification
in the system, probably affecting the whole unit cell.

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The categories of this paper are: ao-sci
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The categories of this paper are: q-bio
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The categories of this paper are: adap-org
1
The categories of this paper are: cs
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: supr-con
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The categories of this paper are: comp-gas
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The categories of this paper are: mtrl-th
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The categories of this paper are: math
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The categories of this paper are: physics
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The categories of this paper are: q-fin
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The categories of this paper are: solv-int
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The categories of this paper are: econ