Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Impurity induced low-energy resonances in Bi_2Sr_2CaCu_2O_{8+delta}   We study sharp low-energy resonance peaks in the local density of states
(LDOS) induced by Zn impurities or possible Cu vacancies in superconducting
Bi_2Sr_2CaCu_2O_{8+delta}. The measured structure of these near-zero-bias
resonances is quantitatively reproduced by an extended impurity potential
without invoking internal impurity states or sophisticated tunneling models.
The Zn potential extends at least to the nearest-neighbor Cu sites, and the
range of order parameter suppression extends at least 8 \AA away from the Zn
site. We further show that the local spin susceptibilities near Zn impurities
increase rather than decrease with decreasing temperature in the
superconducting state due to the sharp increase of LDOS near the Fermi level.

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The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
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The categories of this paper are: hep-th
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The categories of this paper are: quant-ph
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The categories of this paper are: econ
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The categories of this paper are: math
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-ex
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The categories of this paper are: funct-an
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The categories of this paper are: dg-ga
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The categories of this paper are: astro-ph
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The categories of this paper are: supr-con
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The categories of this paper are: atom-ph
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The categories of this paper are: alg-geom