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Extremely Strong Dependence of Superconductivity on Disorder inSr2RuO4
Abstract
A key signature of unconventional or non- $s$-wave superconductivity is a strong suppression of ${T}_{c}$ by nonmagnetic as well as by magnetic impurities. We report measurements of chemical composition and of transport properties in the same single crystals of ${\mathrm{Sr}}_{2}{\mathrm{RuO}}_{4}$ which show that nonmagnetic impurities destroy superconductivity when the residual resistivity exceeds $1\ensuremath{\mu}\ensuremath{\Omega}\phantom{\rule{0ex}{0ex}}\mathrm{cm}$, i.e., when the carrier mean free path falls below the superconducting coherence length. This behavior strongly supports models of non- $s$-wave (e.g., $p$- or $d$-wave) pairing in this layered perovskite oxide.
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Citations
Cited by
Superconductivity on the border of itinerant-electron ferromagnetism in UGe2
Saxena, S. S., Agarwal, P., Ahilan, K., Grosche, F. M., Haselwimmer, R. K. W., Steiner, M. J., Pugh, E., Walker, I. R., Julian, S. R., Monthoux, P., et al. (2000) · Nature · doi:10.1038/35020500 · Cited by 1,544
Self-citationImpurity-induced states in conventional and unconventional superconductors
Balatsky, A. V., Vekhter, I., & Zhu, J.-X. (2006) · Reviews of Modern Physics · doi:10.1103/revmodphys.78.373 · Cited by 1,295
Das Sarma, S., Nayak, C., & Tewari, S. (2006) · Physical Review B · doi:10.1103/physrevb.73.220502 · Cited by 289
Quasi-two-dimensional Fermi liquid properties of the unconventional superconductor Sr2RuO4
Bergemann, C., Mackenzie, A. P., Julian, S. R., Forsythe, D., & Ohmichi, E. (2003) · Advances in Physics · doi:10.1080/00018730310001621737 · Cited by 287
Self-citationUnconventional superconductivity
Stewart, G. R. (2017) · Advances in Physics · doi:10.1080/00018732.2017.1331615 · Cited by 253
Metadata
- Authors
- Mackenzie, A. P., Haselwimmer, R. K. W., Tyler, A. W., Lonzarich, G. G., Mori, Y., Nishizaki, S., & Maeno, Y.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1998-01-05
- Volume
- 80
- Issue
- 1
- Pages
- 161-164
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2043084573
- Cited by
- 533
- References
- 0
- FWCI
- 30.56
- Type
- journal article
- Language
- en
- Open access
- closed
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- Mackenzie, A. P., Haselwimmer, R. K. W., Tyler, A. W., Lonzarich, G. G., Mori, Y., Nishizaki, S., & Maeno, Y. (1998). Extremely Strong Dependence of Superconductivity on Disorder inSr2RuO4. Physical Review Letters. https://doi.org/10.1103/physrevlett.80.161
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