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Superconductivity of Bi-III phase of elemental bismuth: Insights from muon-spin rotation and density functional theory
Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland..
Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland..
Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland..
Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland..
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2018 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 98, no 14, article id 140504Article in journal (Refereed) Published
Abstract [en]

Using muon-spin rotation the pressure-induced superconductivity in the Bi-III phase of elemental bismuth (transition temperature T-c similar or equal to 7.05 K) was investigated. A Ginzburg-Landau parameter kappa = lambda/xi = 30(6) (lambda is the magnetic penetration depth, xi is the coherence length) was estimated, which turns out to be the highest among known single element superconductors. The temperature dependence of the superconducting energy gap [Delta(T)] reconstructed from lambda(-2)(T) deviates from the weakly coupled BCS prediction. The coupling strength 2 Delta/k(B)T

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2018. Vol. 98, no 14, article id 140504
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Materials Engineering
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URN: urn:nbn:se:kth:diva-238124DOI: 10.1103/PhysRevB.98.140504ISI: 000447183100002Scopus ID: 2-s2.0-85054794716OAI: oai:DiVA.org:kth-238124DiVA, id: diva2:1264343
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QC 20181120

Available from: 2018-11-20 Created: 2018-11-20 Last updated: 2018-11-30Bibliographically approved

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