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2008 | 114 | 1 | 59-66
Article title

Pseudogap-Like Phenomena in Cuprates as a Manifestation of Charge-Density Waves

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EN
Abstracts
EN
Differential conductance G as a function of the bias voltage V was measured for break-junctions of superconducting Bi_2Sr_2CaCu_2O_{8+δ} and YBa_2Cu_3O_{7-δ}. The dependences G(V) for both materials clearly demonstrate the so-called dip-hump structures outside the gap region. A theory, which suggests the charge-density-wave origin of the dip-hump structures and explains its specific form by intrinsic inhomogeneity of cuprate materials, was developed. The well-known pseudogap features in the tunnel spectra of high-T_c oxides found both below and above the superconducting critical temperature are also described by the theory, which testifies that both the pseudogap and the dip-hump structures have the same origin. Competing theories and various G(V) peculiarities found for a number of superconducting oxides are briefly discussed.
Keywords
Year
Volume
114
Issue
1
Pages
59-66
Physical description
Dates
published
2008-07
received
2007-11-06
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv114n108kz
Identifiers
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