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Evidence from tunneling spectroscopy for a quasi-one-dimensional origin of superconductivity in Sr2RuO4
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dc.contributor.author | Firmo, I. A. | |
dc.contributor.author | Lederer, S. | |
dc.contributor.author | Lupien, C. | |
dc.contributor.author | Mackenzie, A. P. | |
dc.contributor.author | Davis, J. C. | |
dc.contributor.author | Kivelson, S. A. | |
dc.date.accessioned | 2014-06-02T14:31:01Z | |
dc.date.available | 2014-06-02T14:31:01Z | |
dc.date.issued | 2013-10-28 | |
dc.identifier | 124023748 | |
dc.identifier | 914b5653-0a99-4e58-831d-ca99d20e57d7 | |
dc.identifier | 000326159000004 | |
dc.identifier | 84886785351 | |
dc.identifier.citation | Firmo , I A , Lederer , S , Lupien , C , Mackenzie , A P , Davis , J C & Kivelson , S A 2013 , ' Evidence from tunneling spectroscopy for a quasi-one-dimensional origin of superconductivity in Sr 2 RuO 4 ' , Physical Review. B, Condensed matter and materials physics , vol. 88 , no. 13 , 134521 . https://doi.org/10.1103/PhysRevB.88.134521 | en |
dc.identifier.issn | 1098-0121 | |
dc.identifier.uri | https://hdl.handle.net/10023/4840 | |
dc.description | Funding: UK EPSRC and Royal Society-Wolfson Research Merit Award. | en |
dc.description.abstract | To establish the mechanism of unconventional superconductivity in Sr2RuO4, a prerequisite is direct information concerning the momentum-space structure of the energy gaps Delta(i) (k), and in particular whether the pairing strength is stronger ("dominant") on the quasi-one-dimensional (alpha and beta) or on the quasi-two-dimensional (gamma) Fermi surfaces. We present scanning tunneling microscopy measurements of the density of states spectra in the superconducting state of Sr2RuO4 for 0.1T(c) < T < T-c and analyze them along with published thermodynamic data using a simple phenomenological model. We show that our observation of a single superconducting gap scale with maximum value 2 Delta approximate to 5T(c) along with a spectral shape indicative of line nodes is consistent, within a weak-coupling model, with magnetically mediated odd-parity superconductivity generated by dominant, near-nodal, Cooper pairing on the alpha and beta bands. | |
dc.format.extent | 10 | |
dc.format.extent | 919360 | |
dc.language.iso | eng | |
dc.relation.ispartof | Physical Review. B, Condensed matter and materials physics | en |
dc.subject | Spin-triplet superconductivity | en |
dc.subject | Particle interference | en |
dc.subject | Magnetic-fields | en |
dc.subject | Fermi-surface | en |
dc.subject | Gap structure | en |
dc.subject | Conductivity | en |
dc.subject | Fluctuation | en |
dc.subject | Dependence | en |
dc.subject | Scattering | en |
dc.subject | Symmetry | en |
dc.subject | QC Physics | en |
dc.subject.lcc | QC | en |
dc.title | Evidence from tunneling spectroscopy for a quasi-one-dimensional origin of superconductivity in Sr2RuO4 | en |
dc.type | Journal article | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. Condensed Matter Physics | en |
dc.identifier.doi | https://doi.org/10.1103/PhysRevB.88.134521 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | EP/I031014/1 | en |
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