Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Antiferromagnetic Correlations and the Pseudogap in HTS Cuprates   Evidence is presented from NMR 1/T1T and ARPES data for the sudden
disappearance of 2D antiferromagnetic (AF) correlations in the lightly
overdoped region (p=0.19) at the T=0 metal-insulator transition where the
pseudogap energy falls to zero. AF fluctuations thus appear to be intimately
associated with the pseudogap and serve primarily to weaken superconductivity,
strongly reducing the condensation energy and superfluid density.

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The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
1
The categories of this paper are: cs
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
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The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org