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https://doi.org/10.1103/physre...
Article . 1997 . Peer-reviewed
License: APS Licenses for Journal Article Re-use
Data sources: Crossref
https://dx.doi.org/10.48550/ar...
Article . 1996
License: arXiv Non-Exclusive Distribution
Data sources: Datacite
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Shadow features and shadow bands in the paramagnetic state of cuprate superconductors

Authors: Vilk, Y. M.;

Shadow features and shadow bands in the paramagnetic state of cuprate superconductors

Abstract

The conditions for the precursors of antiferromagnetic bands in cuprate superconductors are studied using weak-to-intermediate coupling approach. It is shown that there are, in fact, three different precursor effects due to the proximity to antiferromagnetic instability: i) the shadow band which associated with new pole in the Green's function ii) the dispersive shadow feature due to the thermal enhancement of the scattering rate and iii) the non-dispersive shadow feature due to quantum spin fluctuation that exist only in $\vec{k}-$scan of the spectral function $A(ω_{Fixed},\vec{k})$. I found that dispersive shadow peaks in $A(ω,\vec{k})$ can exist at finite temperature T in the renormalized classical regime, when $T\gg ω_{sf}$, $ξ_{AFM} >ξ_{th}=v_F/T$ ($ω_{sf}$ is the characteristic energy of spin fluctuations, $ξ_{th}$ is the thermal wave length of electron). In contrast at zero temperature, only non-dispersive shadow feature in $% A(ω_{Fixed},\vec{k})$ has been found. I found, however, that the latter effect is always very small. The theory predict no shadow effects in the optimally doped materials. The conditions for which shadow peaks can be observed in photoemission are discussed.

6 pages, REVTEX, 2 ps figures, version to be published in PRB

Keywords

Condensed Matter (cond-mat), FOS: Physical sciences, Condensed Matter

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
47
Top 10%
Top 10%
Top 10%
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