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dc.contributor.authorArnold, F.
dc.contributor.authorNaumann, M.
dc.contributor.authorRosner, H.
dc.contributor.authorKikugawa, N.
dc.contributor.authorGraf, D.
dc.contributor.authorBalicas, L.
dc.contributor.authorTerashima, T.
dc.contributor.authorUji, S.
dc.contributor.authorTakatsu, H.
dc.contributor.authorKhim, S.
dc.contributor.authorMackenzie, A. P.
dc.contributor.authorHassinger, E.
dc.identifier.citationArnold , F , Naumann , M , Rosner , H , Kikugawa , N , Graf , D , Balicas , L , Terashima , T , Uji , S , Takatsu , H , Khim , S , Mackenzie , A P & Hassinger , E 2020 , ' Fermi surface of PtCoO 2 from quantum oscillations and electronic structure calculations ' , Physical Review B , vol. 101 , no. 19 , 195101 .
dc.identifier.otherPURE: 267963968
dc.identifier.otherPURE UUID: 8375fc5e-edc5-4681-acf4-e278c2fab332
dc.identifier.otherRIS: urn:251E84F8D843D1585DE4981B3C0B4553
dc.identifier.otherRIS: 10.1103/PhysRevB.101.195101
dc.identifier.otherWOS: 000529805000001
dc.identifier.otherScopus: 85086001461
dc.descriptionThe authors would like to acknowledge the financial support from the Max-Planck Society. E.H. and M.N. acknowledge support from Deutsche Forschungsgemeinschaft (DFG) through the Project No. 107745057 (TRR80: From Electronic Correlations to Functionality). This work is also supported by JSPS KAKENHI (No. 18K04715). A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by the National Science Foundation Cooperative Agreements No. DMR-1157490 and No. DMR-1644779 and the State of Florida.en
dc.description.abstractThe delafossite series of layered oxides includes some of the highest conductivity metals ever discovered. Of these, PtCoO2, with a room-temperature resistivity of 1.8 μΩcm for in-plane transport, is the most conducting of all. The high conduction takes place in triangular lattice Pt layers, separated by layers of Co-O octahedra, and the electronic structure is determined by the interplay of the two types of layers. We present a detailed study of quantum oscillations in PtCoO2, at temperatures down to 35 mK and magnetic fields up to 30 T. As for PdCoO2 and PdRhO2, the Fermi surface consists of a single cylinder with mainly Pt character and an effective mass close to the free-electron value. Due to Fermi-surface warping, two close-lying high frequencies are observed. Additionally, a pronounced difference frequency appears. By analyzing the detailed angular dependence of the quantum-oscillation frequencies, we establish the warping parameters of the Fermi surface. We compare these results to the predictions of first-principles electronic-structure calculations including spin-orbit coupling on Pt and Co and on-site correlation U on Co, and hence demonstrate that electronic correlations in the Co-O layers play an important role in determining characteristic features of the electronic structure of PtCoO2.
dc.relation.ispartofPhysical Review Ben
dc.rightsCopyright © 2020 The Author(s). Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.en
dc.subjectQC Physicsen
dc.titleFermi surface of PtCoO2 from quantum oscillations and electronic structure calculationsen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Condensed Matter Physicsen
dc.description.statusPeer revieweden

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