Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Influence of Ti doping on the incommensurate charge density wave in
  1T-TaS2   We report temperature-dependent transport and x-ray diffraction measurements
of the influence of Ti hole doping on the charge density wave (CDW) in
1T-Ta(1-x)Ti(x)S(2). Confirming past studies, we find that even trace
impurities eliminate the low-temperature commensurate (C) phase in this system.
Surprisingly, the magnitude of the in-plane component of the CDW wave vector in
the nearly commensurate (NC) phase does not change significantly with Ti
concentration, as might be expected from a changing Fermi surface volume.
Instead, the angle of the CDW in the basal plane rotates, from 11.9 deg at x=0
to 16.4 deg at x=0.12. Ti substitution also leads to an extended region of
coexistence between incommensurate (IC) and NC phases, indicating heterogeneous
nucleation near the transition. Finally, we explain a resistive anomaly
originally observed by DiSalvo [F. J. DiSalvo, et al., Phys. Rev. B {\bf 12},
2220 (1975)] as arising from pinning of the CDW on the crystal lattice. Our
study highlights the importance of commensuration effects in the NC phase,
particularly at x ~ 0.08.

2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin