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Title: Stripe-like nanoscale structural phase separation in superconducting BaPb1-xBixO3

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms9231· OSTI ID:1260546

The phase diagram of BaPb1-xBixO3 exhibits a superconducting dome in the proximity of a charge density wave phase. For the superconducting compositions, the material coexists as two structural polymorphs. Here we show, via high-resolution transmission electron microscopy, that the structural dimorphism is accommodated in the form of partially disordered nanoscale stripes. Identification of the morphology of the nanoscale structural phase separation enables determination of the associated length scales, which we compare with the Ginzburg–Landau coherence length. We find that the maximum Tc occurs when the superconducting coherence length matches the width of the partially disordered stripes, implying a connection between the structural phase separation and the shape of the superconducting dome.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-76SF0051
OSTI ID:
1260546
Journal Information:
Nature Communications, Vol. 6; ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English

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Cited By (6)

Multiple Electronic Components and Lifshitz Transitions by Oxygen Wires Formation in Layered Cuprates and Nickelates journal January 2019
The Quest for High(er) Tc in BaBiO3-Based Heterostructures journal November 2019
Coherent-strained superconducting BaP b 1 x B i x O 3 thin films by interface engineering journal November 2019
Two-dimensional limit of crystalline order in perovskite membrane films journal November 2017
Evolution of Complexity in Out-of-Equilibrium Systems by Time-Resolved or Space-Resolved Synchrotron Radiation Techniques journal March 2019
Anomalous relaxation kinetics and charge-density-wave correlations in underdoped BaPb 1− x Bi x O 3 journal August 2017

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