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Title: Tuning the Pairing Interaction in a d -Wave Superconductor by Paramagnons Injected through Interfaces

Abstract

Unconventional superconductivity and magnetism are intertwined on a microscopic level in a wide class of materials. A new approach to this most fundamental and hotly debated issue focuses on the role of interactions between superconducting electrons and bosonic fluctuations at the interface between adjacent layers in heterostructures. In this paper, we fabricate hybrid superlattices consisting of alternating atomic layers of the heavy-fermion superconductor $${\mathrm{CeCoIn}}_{5}$$ and antiferromagnetic (AFM) metal $${\mathrm{CeRhIn}}_{5}$$, in which the AFM order can be suppressed by applying pressure. We find that the superconducting and AFM states coexist in spatially separated layers, but their mutual coupling via the interface significantly modifies the superconducting properties. An analysis of upper critical fields reveals that, upon suppressing the AFM order by applied pressure, the force binding superconducting electron pairs acquires an extreme strong-coupling nature. Finally, this demonstrates that superconducting pairing can be tuned nontrivially by magnetic fluctuations (paramagnons) injected through the interface.

Authors:
 [1];  [2];  [2];  [1];  [3];  [1];  [1];  [1];  [4];  [2];  [2];  [1]
+ Show Author Affiliations
  1. Kyoto Univ. (Japan). Dept. of Physics
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Kyoto Univ. (Japan). Dept. of Physics; Univ. of Augsburg (Germany). Center for Electronic Correlations and Magnetism. Inst. of Physics
  4. Univ. of Tokyo (Japan). Dept. of Advanced Materials Science
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Japan Society for the Promotion of Science (JSPS)
OSTI Identifier:
1441308
Alternate Identifier(s):
OSTI ID: 1435991
Report Number(s):
LA-UR-17-28530
Journal ID: ISSN 0031-9007; TRN: US1900889
Grant/Contract Number:  
AC52-06NA25396; 25220710; 15H02014; 15H02106; 15H05457; JP15H05852; 26105004
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 18; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Material Science; superconductivity, heavy fermion, heterostructure

Citation Formats

Naritsuka, M., Rosa, P. F. S., Luo, Yongkang, Kasahara, Y., Tokiwa, Y., Ishii, T., Miyake, S., Terashima, T., Shibauchi, T., Ronning, F., Thompson, J. D., and Matsuda, Y. Tuning the Pairing Interaction in a d -Wave Superconductor by Paramagnons Injected through Interfaces. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.120.187002.
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Naritsuka, M., Rosa, P. F. S., Luo, Yongkang, Kasahara, Y., Tokiwa, Y., Ishii, T., Miyake, S., Terashima, T., Shibauchi, T., Ronning, F., Thompson, J. D., & Matsuda, Y. Tuning the Pairing Interaction in a d -Wave Superconductor by Paramagnons Injected through Interfaces. United States. https://doi.org/10.1103/PhysRevLett.120.187002
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Naritsuka, M., Rosa, P. F. S., Luo, Yongkang, Kasahara, Y., Tokiwa, Y., Ishii, T., Miyake, S., Terashima, T., Shibauchi, T., Ronning, F., Thompson, J. D., and Matsuda, Y. Fri . "Tuning the Pairing Interaction in a d -Wave Superconductor by Paramagnons Injected through Interfaces". United States. https://doi.org/10.1103/PhysRevLett.120.187002. https://www.osti.gov/servlets/purl/1441308.
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@article{osti_1441308,
title = {Tuning the Pairing Interaction in a d -Wave Superconductor by Paramagnons Injected through Interfaces},
author = {Naritsuka, M. and Rosa, P. F. S. and Luo, Yongkang and Kasahara, Y. and Tokiwa, Y. and Ishii, T. and Miyake, S. and Terashima, T. and Shibauchi, T. and Ronning, F. and Thompson, J. D. and Matsuda, Y.},
abstractNote = {Unconventional superconductivity and magnetism are intertwined on a microscopic level in a wide class of materials. A new approach to this most fundamental and hotly debated issue focuses on the role of interactions between superconducting electrons and bosonic fluctuations at the interface between adjacent layers in heterostructures. In this paper, we fabricate hybrid superlattices consisting of alternating atomic layers of the heavy-fermion superconductor ${\mathrm{CeCoIn}}_{5}$ and antiferromagnetic (AFM) metal ${\mathrm{CeRhIn}}_{5}$, in which the AFM order can be suppressed by applying pressure. We find that the superconducting and AFM states coexist in spatially separated layers, but their mutual coupling via the interface significantly modifies the superconducting properties. An analysis of upper critical fields reveals that, upon suppressing the AFM order by applied pressure, the force binding superconducting electron pairs acquires an extreme strong-coupling nature. Finally, this demonstrates that superconducting pairing can be tuned nontrivially by magnetic fluctuations (paramagnons) injected through the interface.},
doi = {10.1103/PhysRevLett.120.187002},
journal = {Physical Review Letters},
number = 18,
volume = 120,
place = {United States},
year = {2018},
month = {5}
}
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https://doi.org/10.1103/PhysRevLett.120.187002
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    Works referencing / citing this record:

    Anti-PbO-type CoSe film: a possible analog to FeSe superconductors
    journal, October 2018

    • Liu, Chong; Zheng, Fawei; Shen, Lei
    • Superconductor Science and Technology, Vol. 31, Issue 11
    • DOI: 10.1088/1361-6668/aae146

    Coupling between the heavy-fermion superconductor CeCoIn 5 and the antiferromagnetic metal CeIn 3 through the atomic interface
    journal, July 2019

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