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Title: Charge density wave modulation in superconducting BaPb O 3 / BaBi O 3 superlattices

Abstract

The isotropic, nonmagnetic doped BaBiO 3 superconductors maintain some similarities to high-T c cuprates, while also providing a cleaner system for isolating charge density wave (CDW) physics that commonly competes with superconductivity. Artificial layered superlattices offer the possibility of engineering the interaction between superconductivity and CDW. Here we stabilize a low-temperature, fluctuating short-range CDW order by using artificially layered epitaxial (BaPbO 3) 3m/(BaBiO 3) m (m = 1-10 unit cells) superlattices that are not present in the optimally doped BaPb 0.75Bi 0.25O 3 alloy with the same overall chemical formula. Charge transfer from BaBiO 3 to BaPbO 3 effectively dopes the former and suppresses the long-range CDW; however, as the short-range CDW fluctuations strengthen at low temperatures charge appears to localize and superconductivity is weakened. The monolayer structural control demonstrated here provides compelling implications to access controllable, local density wave orders absent in bulk alloys and manipulate phase competition in unconventional superconductors.

Authors:
ORCiD logo [1];  [1];  [2];  [2];  [2];  [3];  [4]; ORCiD logo [4];  [4]; ORCiD logo [2];  [1]; ORCiD logo [1]
  1. Univ. of Wisconsin, Madison, WI (United States)
  2. Ames Lab., and Iowa State Univ., Ames, IA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  4. Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1615759
Alternate Identifier(s):
OSTI ID: 1601055
Grant/Contract Number:  
AC02-06CH11357; AC02-07CH11358; FG02-06ER46327
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 101; Journal Issue: 6; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; charge density wave; superconductivity; superlattice; thin films

Citation Formats

Harris, D. T., Campbell, N. G., Di, C., Park, J. -M., Luo, L., Zhou, H., Kim, G. -Y., Song, K., Choi, S. -Y., Wang, J., Rzchowski, M. S., and Eom, C. B. Charge density wave modulation in superconducting BaPbO3/BaBiO3 superlattices. United States: N. p., 2020. Web. doi:10.1103/PhysRevB.101.064509.
Harris, D. T., Campbell, N. G., Di, C., Park, J. -M., Luo, L., Zhou, H., Kim, G. -Y., Song, K., Choi, S. -Y., Wang, J., Rzchowski, M. S., & Eom, C. B. Charge density wave modulation in superconducting BaPbO3/BaBiO3 superlattices. United States. doi:10.1103/PhysRevB.101.064509.
Harris, D. T., Campbell, N. G., Di, C., Park, J. -M., Luo, L., Zhou, H., Kim, G. -Y., Song, K., Choi, S. -Y., Wang, J., Rzchowski, M. S., and Eom, C. B. Wed . "Charge density wave modulation in superconducting BaPbO3/BaBiO3 superlattices". United States. doi:10.1103/PhysRevB.101.064509.
@article{osti_1615759,
title = {Charge density wave modulation in superconducting BaPbO3/BaBiO3 superlattices},
author = {Harris, D. T. and Campbell, N. G. and Di, C. and Park, J. -M. and Luo, L. and Zhou, H. and Kim, G. -Y. and Song, K. and Choi, S. -Y. and Wang, J. and Rzchowski, M. S. and Eom, C. B.},
abstractNote = {The isotropic, nonmagnetic doped BaBiO3 superconductors maintain some similarities to high-Tc cuprates, while also providing a cleaner system for isolating charge density wave (CDW) physics that commonly competes with superconductivity. Artificial layered superlattices offer the possibility of engineering the interaction between superconductivity and CDW. Here we stabilize a low-temperature, fluctuating short-range CDW order by using artificially layered epitaxial (BaPbO3)3m/(BaBiO3)m (m = 1-10 unit cells) superlattices that are not present in the optimally doped BaPb0.75Bi0.25O3 alloy with the same overall chemical formula. Charge transfer from BaBiO3 to BaPbO3 effectively dopes the former and suppresses the long-range CDW; however, as the short-range CDW fluctuations strengthen at low temperatures charge appears to localize and superconductivity is weakened. The monolayer structural control demonstrated here provides compelling implications to access controllable, local density wave orders absent in bulk alloys and manipulate phase competition in unconventional superconductors.},
doi = {10.1103/PhysRevB.101.064509},
journal = {Physical Review B},
issn = {2469-9950},
number = 6,
volume = 101,
place = {United States},
year = {2020},
month = {2}
}

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