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Title: Block copolymer self-assembly-directed synthesis of mesoporous gyroidal superconductors

Abstract

Superconductors with periodically ordered mesoporous structures are expected to have properties very different from those of their bulk counterparts. Systematic studies of such phenomena to date are sparse, however, because of a lack of versatile synthetic approaches to such materials. We demonstrate the formation of three-dimensionally continuous gyroidal mesoporous niobium nitride (NbN) superconductors from chiral ABC triblock terpolymer self-assembly–directed sol-gel–derived niobium oxide with subsequent thermal processing in air and ammonia gas. Superconducting materials exhibit a critical temperature (Tc) of about 7 to 8 K, a flux exclusion of about 5% compared to a dense NbN solid, and an estimated critical current density (Jc) of 440 A cm–2 at 100 Oe and 2.5 K. In conclusion, we expect block copolymer self-assembly–directed mesoporous superconductors to provide interesting subjects for mesostructure-superconductivity correlation studies.

Authors:
 [1];  [1];  [2];  [3];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Cornell Univ., Ithaca, NY (United States)
  2. Cornell Univ., Ithaca, NY (United States); Northwestern Univ., Evanston, IL (United States)
  3. Cornell Univ., Ithaca, NY (United States); Singapore-MIT Alliance for Research and Technology (Singapore)
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Energy Materials Center at Cornell (EMC2); Cornell Univ., Ithaca, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1466753
Grant/Contract Number:  
SC0001086; FG02-11ER16210
Resource Type:
Accepted Manuscript
Journal Name:
Science Advances
Additional Journal Information:
Journal Volume: 2; Journal Issue: 1; Journal ID: ISSN 2375-2548
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Robbins, Spencer W., Beaucage, Peter A., Sai, Hiroaki, Tan, Kwan Wee, Werner, Jorg G., Sethna, James P., DiSalvo, Francis J., Gruner, Sol M., Van Dover, Robert B., and Wiesner, Ulrich. Block copolymer self-assembly-directed synthesis of mesoporous gyroidal superconductors. United States: N. p., 2016. Web. doi:10.1126/sciadv.1501119.
Robbins, Spencer W., Beaucage, Peter A., Sai, Hiroaki, Tan, Kwan Wee, Werner, Jorg G., Sethna, James P., DiSalvo, Francis J., Gruner, Sol M., Van Dover, Robert B., & Wiesner, Ulrich. Block copolymer self-assembly-directed synthesis of mesoporous gyroidal superconductors. United States. doi:10.1126/sciadv.1501119.
Robbins, Spencer W., Beaucage, Peter A., Sai, Hiroaki, Tan, Kwan Wee, Werner, Jorg G., Sethna, James P., DiSalvo, Francis J., Gruner, Sol M., Van Dover, Robert B., and Wiesner, Ulrich. Fri . "Block copolymer self-assembly-directed synthesis of mesoporous gyroidal superconductors". United States. doi:10.1126/sciadv.1501119. https://www.osti.gov/servlets/purl/1466753.
@article{osti_1466753,
title = {Block copolymer self-assembly-directed synthesis of mesoporous gyroidal superconductors},
author = {Robbins, Spencer W. and Beaucage, Peter A. and Sai, Hiroaki and Tan, Kwan Wee and Werner, Jorg G. and Sethna, James P. and DiSalvo, Francis J. and Gruner, Sol M. and Van Dover, Robert B. and Wiesner, Ulrich},
abstractNote = {Superconductors with periodically ordered mesoporous structures are expected to have properties very different from those of their bulk counterparts. Systematic studies of such phenomena to date are sparse, however, because of a lack of versatile synthetic approaches to such materials. We demonstrate the formation of three-dimensionally continuous gyroidal mesoporous niobium nitride (NbN) superconductors from chiral ABC triblock terpolymer self-assembly–directed sol-gel–derived niobium oxide with subsequent thermal processing in air and ammonia gas. Superconducting materials exhibit a critical temperature (Tc) of about 7 to 8 K, a flux exclusion of about 5% compared to a dense NbN solid, and an estimated critical current density (Jc) of 440 A cm–2 at 100 Oe and 2.5 K. In conclusion, we expect block copolymer self-assembly–directed mesoporous superconductors to provide interesting subjects for mesostructure-superconductivity correlation studies.},
doi = {10.1126/sciadv.1501119},
journal = {Science Advances},
number = 1,
volume = 2,
place = {United States},
year = {2016},
month = {1}
}

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