Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Few-layer Tellurium: one-dimensional-like layered elementary
  semiconductor with striking physical properties   Few-layer Tellurium, an elementary semiconductor, succeeds most of striking
physical properties that black phosphorus (BP) offers and could be feasibly
synthesized by simple solution-based methods. It is comprised of non-covalently
bound parallel Te chains, among which covalent-like feature appears. This
feature is, we believe, another demonstration of the previously found
covalent-like quasi-bonding (CLQB) where wavefunction hybridization does occur.
The strength of this inter-chain CLQB is comparable with that of intra-chain
covalent bonding, leading to closed stability of several Te allotropes. It also
introduces a tunable bandgap varying from nearly direct 0.31 eV (bulk) to
indirect 1.17 eV (2L) and four (two) complex, highly anisotropic and
layer-dependent hole (electron) pockets in the first Brillouin zone. It also
exhibits an extraordinarily high hole mobility (~10$^5$ cm$^2$/Vs) and strong
optical absorption along the non-covalently bound direction, nearly isotropic
and layer-dependent optical properties, large ideal strength over 20%, better
environmental stability than BP and unusual crossover of force constants for
interlayer shear and breathing modes. All these results manifest that the
few-layer Te is an extraordinary-high-mobility, high optical absorption,
intrinsic-anisotropy, low-cost-fabrication, tunable bandgap, better
environmental stability and nearly direct bandgap semiconductor. This
"one-dimension-like" few-layer Te, together with other geometrically similar
layered materials, may promote the emergence of a new family of layered
materials.

22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph