Competing magnetic orders in the superconducting state of heavy-fermion CeRhIn5
Abstract
Applied pressure drives the heavy-fermion antiferromagnet CeRhIn5 toward a quantum critical point that becomes hidden by a dome of unconventional superconductivity. Magnetic fields suppress this superconducting dome, unveiling the quantum phase transition of local character. Here in this paper, we show that 5% magnetic substitution at the Ce site in CeRhIn5, either by Nd or Gd, induces a zero-field magnetic instability inside the superconducting state. This magnetic state not only should have a different ordering vector than the high-field local-moment magnetic state, but it also competes with the latter, suggesting that a spin-density-wave phase is stabilized in zero field by Nd and Gd impurities, similarly to the case of Ce0.95Nd0.05CoIn5. Supported by model calculations, we attribute this spin-density wave instability to a magnetic-impurity-driven condensation of the spin excitons that form inside the unconventional superconducting state.
- Authors:
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1356271
- Alternate Identifier(s):
- OSTI ID: 1392869
- Report Number(s):
- LA-UR-16-21979
Journal ID: ISSN 0027-8424
- Grant/Contract Number:
- SC0012336; AC52-06NA25396
- Resource Type:
- Published Article
- Journal Name:
- Proceedings of the National Academy of Sciences of the United States of America
- Additional Journal Information:
- Journal Name: Proceedings of the National Academy of Sciences of the United States of America; Journal ID: ISSN 0027-8424
- Publisher:
- National Academy of Sciences, Washington, DC (United States)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Material Science; magnetism; superconductivity; heavy fermions
Citation Formats
Rosa, P. F. S., Kang, J., Luo, Yongkang, Wakeham, N., Bauer, E. D., Ronning, F., Fisk, Z., Fernandes, R. M., and Thompson, J. D. Competing magnetic orders in the superconducting state of heavy-fermion CeRhIn5. United States: N. p., 2017.
Web. doi:10.1073/pnas.1703016114.
Rosa, P. F. S., Kang, J., Luo, Yongkang, Wakeham, N., Bauer, E. D., Ronning, F., Fisk, Z., Fernandes, R. M., & Thompson, J. D. Competing magnetic orders in the superconducting state of heavy-fermion CeRhIn5. United States. https://doi.org/10.1073/pnas.1703016114
Rosa, P. F. S., Kang, J., Luo, Yongkang, Wakeham, N., Bauer, E. D., Ronning, F., Fisk, Z., Fernandes, R. M., and Thompson, J. D. Tue .
"Competing magnetic orders in the superconducting state of heavy-fermion CeRhIn5". United States. https://doi.org/10.1073/pnas.1703016114.
@article{osti_1356271,
title = {Competing magnetic orders in the superconducting state of heavy-fermion CeRhIn5},
author = {Rosa, P. F. S. and Kang, J. and Luo, Yongkang and Wakeham, N. and Bauer, E. D. and Ronning, F. and Fisk, Z. and Fernandes, R. M. and Thompson, J. D.},
abstractNote = {Applied pressure drives the heavy-fermion antiferromagnet CeRhIn5 toward a quantum critical point that becomes hidden by a dome of unconventional superconductivity. Magnetic fields suppress this superconducting dome, unveiling the quantum phase transition of local character. Here in this paper, we show that 5% magnetic substitution at the Ce site in CeRhIn5, either by Nd or Gd, induces a zero-field magnetic instability inside the superconducting state. This magnetic state not only should have a different ordering vector than the high-field local-moment magnetic state, but it also competes with the latter, suggesting that a spin-density-wave phase is stabilized in zero field by Nd and Gd impurities, similarly to the case of Ce0.95Nd0.05CoIn5. Supported by model calculations, we attribute this spin-density wave instability to a magnetic-impurity-driven condensation of the spin excitons that form inside the unconventional superconducting state.},
doi = {10.1073/pnas.1703016114},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = ,
volume = ,
place = {United States},
year = {Tue May 09 00:00:00 EDT 2017},
month = {Tue May 09 00:00:00 EDT 2017}
}
https://doi.org/10.1073/pnas.1703016114
Web of Science
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