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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/33910
Record Status
Checked
Record Id
33910
Title
Anomaly in YBa
2
Cu
4
O
8
charge distribution below T
c
: A zero-field muon spin relaxation study
Contributors
P Carretta (Pavia)
,
A Keren
,
JS Lord (CCLRC Rutherford Appleton Lab.)
,
I Zucca (Pavia)
,
SM Kazakov (ETH Zurich)
,
J Karpinski (ETH Zurich)
Abstract
Zero-field muon spin-relaxation (µSR) measurements in 63Cu isotope enriched and natural YBa2Cu4O8 powders are presented. The µ+ relaxation rate is characterized by a sizeable enhancement as the temperature is lowered below the superconducting transition temperature Tc. The comparison of the asymmetry decay in the two samples reveals that the µ+ relaxation is driven by nuclear dipole interaction from 300 K down to 4.2 K. It is argued that the increase in the relaxation rate below Tc originates from a change either of the µ+ site or of the orientation of the electric-field gradient at the Cu nuclei, due to a modification in the charge distribution within CuO chains. ©2005 The American Physical Society
Organisation
CCLRC
,
ISIS
,
ISIS-MuSR
Keywords
Physics
,
ISIS 2005
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Phys Rev B
71 (2005): 052507.
doi:10.1103/PhysRevB.71.052507
2005
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