Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Raman Signatures of Broken Inversion Symmetry and In-plane Anisotropy in
  Type-II Weyl Semimetal Candidate TaIrTe4   The layered ternary compound TaIrTe4 is an important candidate to host the
recently predicted type-II Weyl Fermions. However, a direct and definitive
proof of the absence of inversion symmetry in this material, a prerequisite for
the existence of Weyl Fermions, has so far remained evasive. Herein, an
unambiguous identification of the broken inversion symmetry in TaIrTe4 is
established using angle-resolved polarized Raman spectroscopy. Combining with
high-resolution transmission electron microscopy, we demonstrate an efficient
and nondestructive recipe to determine the exact crystallographic orientation
of TaIrTe4 crystals. Such technique could be extended to the fast
identification and characterization of other type-II Weyl Fermions candidates.
A surprisingly strong in-plane electrical anisotropy in TaIrTe4 thin flakes is
also revealed, up to 200% at 10K, which is the strongest known electrical
anisotropy for materials with comparable carrier density, notably in such good
metals as copper and silver.

10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th