The DOI matches its Crossref record; 12 of the 12 references it cites were found in a registry or an index.
Inelastic scattering and pair breaking in anisotropic and isotropic superconductors
Abstract
The pair-breaking effect of inelastic scattering of electrons off boson fluctuations is examined for anisotropic and isotropic superconductors. We show that the ratio g of the couplings of the boson fluctuations to the pairing and normal electron self-energies is an important parameter. Phonon-mediated s-wave superconductivity corresponds to a value of g=1, and spin-fluctuation-mediated d-wave superconductivity to g<1. For g<1, there is a critical frequency ${\ensuremath{\omega}}_{c}$\ensuremath{\sim}${T}_{c}$${e}^{1/g}$ in the boson spectrum: bosons at \ensuremath{\omega}${\ensuremath{\omega}}_{c}$ are pair breaking. We give an approximate expression for the pair-breaking effect of low-lying bosons. We also study the dependence of ${T}_{c}$ upon g in an Einstein model in which the boson spectral weight is concentrated at a frequency ${\ensuremath{\omega}}_{E}$. We show that for fixed electron-boson coupling, ${T}_{c}$/${\ensuremath{\omega}}_{E}$ decreases rapidly as g decreases from 1, and for g\ensuremath{\ne}1 ${T}_{c}$/${\ensuremath{\omega}}_{E}$ saturates at a low value as the coupling tends to infinity. Applications to heavy-fermion superconductors and to the new high-${T}_{c}$ materials are discussed.
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Citations
Cites
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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
Electrodynamics of high-Tcsuperconductors
Basov, D. N., & Timusk, T. (2005) · Reviews of Modern Physics · doi:10.1103/revmodphys.77.721 · Cited by 788
Superconductivity on the Border of Weak Itinerant Ferromagnetism in UCoGe
Huy, N. T., Gasparini, A., de Nijs, D. E., Huang, Y., Klaasse, J. C. P., Gortenmulder, T., de Visser, A., Hamann, A., Görlach, T., & Löhneysen, H. V. (2007) · Physical Review Letters · doi:10.1103/physrevlett.99.067006 · Cited by 573
Monthoux, P., Balatsky, A. V., & Pines, D. (1991) · Physical Review Letters · doi:10.1103/physrevlett.67.3448 · Cited by 572
Unconventional superconductivity
Stewart, G. R. (2017) · Advances in Physics · doi:10.1080/00018732.2017.1331615 · Cited by 253
Metadata
- Authors
- Millis, A. J., Sachdev, S., & Varma, C. M.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 1988-04-01
- Volume
- 37
- Issue
- 10
- Pages
- 4975-4986
- ISSN
- 0163-1829 (ISSN-L)
- OpenAlex
- W2060956171
- Cited by
- 306
- References
- 12
- FWCI
- 3.68
- Type
- journal article
- Language
- en
- Open access
- closed
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