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@ARTICLE{Campi:291689,
author = {Campi, G. and Bianconi, A. and Poccia, N. and Bianconi, G.
and Barba, L. and Arrighetti, G. and Innocenti, D. and
Karpinski, J. and Zhigadlo, N. D. and Kazakov, S. M. and
Burghammer, M. and von Zimmermann, Martin and Sprung, M. and
Ricci, A.},
title = {{I}nhomogeneity of charge-density-wave order and quenched
disorder in a high-{T}c superconductor},
journal = {Nature},
volume = {525},
number = {7569},
issn = {1476-4687},
address = {London},
publisher = {Macmillan28177},
reportid = {PUBDB-2015-05519},
pages = {359 - 362},
year = {2015},
note = {(c) Macmillan Publishers Limited. Post referee full text in
progress.},
abstract = {It has recently been established that the
high-transition-temperature (high-Tc) superconducting state
coexists with short-range charge-density-wave order and
quenched disorder arising from dopants and strain. This
complex, multiscale phase separation invites the development
of theories of high-temperature superconductivity that
include complexity. The nature of the spatial interplay
between charge and dopant order that provides a basis for
nanoscale phase separation remains a key open question,
because experiments have yet to probe the unknown spatial
distribution at both the nanoscale and mesoscale (between
atomic and macroscopic scale). Here we report micro X-ray
diffraction imaging of the spatial distribution of both
short-range charge-density-wave ‘puddles’ (domains with
only a few wavelengths) and quenched disorder in
HgBa${_2}$CuO${_4+y}$, the single-layer cuprate with the
highest T${_c}$, 95 kelvin. We found that the
charge-density-wave puddles, like the steam bubbles in
boiling water, have a fat-tailed size distribution that is
typical of self-organization near a critical point. However,
the quenched disorder, which arises from oxygen
interstitials, has a distribution that is contrary to the
usually assumed random, uncorrelated distribution. The
interstitial-oxygen-rich domains are spatially
anticorrelated with the charge-density-wave domains, because
higher doping does not favour the stripy charge-density-wave
puddles, leading to a complex emergent geometry of the
spatial landscape for superconductivity.},
cin = {FS-PE},
ddc = {070},
cid = {I:(DE-H253)FS-PE-20120731},
pnm = {6212 - Quantum Condensed Matter: Magnetism,
Superconductivity (POF3-621) / 6G3 - PETRA III (POF3-622)},
pid = {G:(DE-HGF)POF3-6212 / G:(DE-HGF)POF3-6G3},
experiment = {EXP:(DE-H253)P-P10-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000361297900039},
pubmed = {pmid:26381983},
doi = {10.1038/nature14987},
url = {https://bib-pubdb1.desy.de/record/291689},
}