Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-Locality and Strong Coupling in the Heavy Fermion Superconductor
  CeCoIn$_{5}$: A Penetration Depth Study   We report measurements of the magnetic penetration depth $\lambda$ in single
crystals of CeCoIn$_{5}$ down to $\sim$0.14 K using a tunnel-diode based,
self-inductive technique at 28 MHz. While the in-plane penetration depth tends
to follow a power law, $\lambda_{//} \sim {\it T}^{3/2}$, the data are better
described as a crossover between linear ({\it T} $\gg $ ${\it T}^\ast $) and
quadratic ({\it T} $\ll {\it T}^\ast $) behavior, with ${\it T}^\ast $ the
crossover temperature in the strong-coupling limit. The {\it c}-axis
penetration depth $\lambda_{\perp} $ is linear in {\it T}, providing evidence
that CeCoIn$_{5}$ is a {\it d}-wave superconductor with line nodes along the
{\it c}-axis. The different temperature dependences of $\lambda_{//} $ and
$\lambda_{\perp} $ rule out impurity effects as the source of ${\it T}^{\ast}
$.

27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex