Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic penetration depth and gap symmetry of the noncentrosymmetric
  superconductors CePt3Si and LaPt3Si   We report on measurements of the temperature dependence of the magnetic
penetration depth of a very high quality single crystal of nonmagnetic
superconductor LaPt3Si without inversion symmetry. The results are compared
with those previously reported for the isostructural antiferromagnetic
superconductor CePt3Si. At low temperatures, the penetration depth follows a
BCS exponential behavior that implies an isotropic energy gap in LaPt3Si, in
contrast to a linear response that indicates line nodes in CePt3Si. These line
nodes have been argued to be protected by symmetry or accidentally generated by
parity mixing. The present results provide support for the viewpoint that
parity mixing alone does not seem to lead to unconventionality in CePt3Si and
that it requires the antiferromagnetic order to be included.

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The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
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The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
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The categories of this paper are: econ