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Title: The Quest for High(er) Tc in BaBiO3-Based Heterostructures

Abstract

Almost all known superconductors with high Tc have layered structure and are quasi two-dimensional (2D) electronically. Among those that are not, hole-doped BaBiO3 has the highest Tc (and also the highest among all oxides other than cuprates). Coincidentally, Bi is a valence-skipping element and a natural candidate for a negative-U center, with the potential of enhancing superconductivity, as often pointed out by Ted Geballe. With this motivation, we have been trying to synthesize quasi-2D embodiments of BaBiO3. The technique we use is atomic-layer-by-layer molecular beam epitaxy (ALL-MBE), which allows for ‘digital’ synthesis of atomically precise heterostructures and superlattices. We have succeeded in synthesizing some novel, artificial, metastable, layered compounds such as Ba3Bi2LaO9. So far, neither has shown superconductivity, but we will persist in trying.

Authors:
ORCiD logo [1];  [1];  [2];  [2];  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Yale Univ., New Haven, CT (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1566822
Alternate Identifier(s):
OSTI ID: 1571431
Report Number(s):
BNL-212110-2019-JAAM; BNL-212205-2019-JAAM
Journal ID: ISSN 1557-1939
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Superconductivity and Novel Magnetism
Additional Journal Information:
Journal Volume: 33; Journal Issue: 1; Journal ID: ISSN 1557-1939
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Barium bismuthate; molecular beam epitaxy; atomic-layer engineering; metastable compounds; metastable

Citation Formats

Bozovic, Ivan, He, Xi, Bollinger, Anthony T., Han, Myung-Guan, and Zhu, Yimei. The Quest for High(er) Tc in BaBiO3-Based Heterostructures. United States: N. p., 2019. Web. https://doi.org/10.1007/s10948-019-05326-y.
Bozovic, Ivan, He, Xi, Bollinger, Anthony T., Han, Myung-Guan, & Zhu, Yimei. The Quest for High(er) Tc in BaBiO3-Based Heterostructures. United States. https://doi.org/10.1007/s10948-019-05326-y
Bozovic, Ivan, He, Xi, Bollinger, Anthony T., Han, Myung-Guan, and Zhu, Yimei. Tue . "The Quest for High(er) Tc in BaBiO3-Based Heterostructures". United States. https://doi.org/10.1007/s10948-019-05326-y. https://www.osti.gov/servlets/purl/1566822.
@article{osti_1566822,
title = {The Quest for High(er) Tc in BaBiO3-Based Heterostructures},
author = {Bozovic, Ivan and He, Xi and Bollinger, Anthony T. and Han, Myung-Guan and Zhu, Yimei},
abstractNote = {Almost all known superconductors with high Tc have layered structure and are quasi two-dimensional (2D) electronically. Among those that are not, hole-doped BaBiO3 has the highest Tc (and also the highest among all oxides other than cuprates). Coincidentally, Bi is a valence-skipping element and a natural candidate for a negative-U center, with the potential of enhancing superconductivity, as often pointed out by Ted Geballe. With this motivation, we have been trying to synthesize quasi-2D embodiments of BaBiO3. The technique we use is atomic-layer-by-layer molecular beam epitaxy (ALL-MBE), which allows for ‘digital’ synthesis of atomically precise heterostructures and superlattices. We have succeeded in synthesizing some novel, artificial, metastable, layered compounds such as Ba3Bi2LaO9. So far, neither has shown superconductivity, but we will persist in trying.},
doi = {10.1007/s10948-019-05326-y},
journal = {Journal of Superconductivity and Novel Magnetism},
number = 1,
volume = 33,
place = {United States},
year = {2019},
month = {10}
}

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