Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Influence of orbital pair breaking on paramagnetically limited states in
  clean superconductors   Paramagnetic pair breaking is believed to be of increasing importance in many
layered superconducting materials such as cuprates and organic compounds.
Recently, strong evidence for a phase transition to the
Fulde-Ferrell-Larkin-Ovchinnikov(FFLO) state has been obtained for the first
time. We present a new theory of competing spin and orbital pair breaking in
clean superconducting films or layers. As a general result, we find that the
influence of orbital pair breaking on the paramagnetically limited phase
boundary is rather strong, and its neglect seldom justified. This is
particularly true for the FFLO state which can be destroyed by a very small
orbital contribution. We discuss the situation in YBa_2Cu_3O_7 which has two
coupled conducting Cu-O layers per unit cell. As a consequence, an intrinsic
orbital pair breaking component might exist even for applied field exactly
parallel to the layers.

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The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
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The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
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The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom