Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhanced Coherence of Antinodal Quasiparticles in a Dirty d-wave
  Superconductor   Recent ARPES experiments show a narrow quasiparticle peak at the gap edge
along the antinodal [1,0]-direction for the overdoped cuprate superconductors.
We show that within weak coupling BCS theory for a d-wave superconductor the
s-wave single-impurity scattering cross section vanishes for energies of the
gap edge. This coherence effect occurs through multiple scattering off the
impurity. For small impurity concentrations the spectral function has a
pronounced increase of the (scattering) lifetime for antinodal quasiparticles
but shows a very broad peak in the nodal direction, in qualitative agreement
with experiment and in strong contrast to the behavior observed in underdoped
cuprates.

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The categories of this paper are: physics
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The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
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The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
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The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
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The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: dg-ga
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The categories of this paper are: eess
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The categories of this paper are: comp-gas