Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic and structural quantum phase transitions in CeCu6-xAux are
  independent   The heavy-fermion compound CeCu$_{6-x}$Au$_x$ has become a model system for
unconventional magnetic quantum criticality. For small Au concentrations $0
\leq x < 0.16$, the compound undergoes a structural transition from
orthorhombic to monoclinic crystal symmetry at a temperature $T_{s}$ with
$T_{s} \rightarrow 0$ for $x \approx 0.15$. Antiferromagnetic order sets in
close to $x \approx 0.1$. To shed light on the interplay between quantum
critical magnetic and structural fluctuations we performed neutron-scattering
and thermodynamic measurements on samples with $0 \leq x\leq 0.3$. The
resulting phase diagram shows that the antiferromagnetic and monoclinic phase
coexist in a tiny Au concentration range between $x\approx 0.1$ and $0.15$. The
application of hydrostatic and chemical pressure allows to clearly separate the
transitions from each other and to explore a possible effect of the structural
transition on the magnetic quantum critical behavior. Our measurements
demonstrate that at low temperatures the unconventional quantum criticality
exclusively arises from magnetic fluctuations and is not affected by the
monoclinic distortion.

9
The categories of this paper are: nlin
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin