English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The delafossite series of layered oxides include some of the highestconductivity metals ever discovered. Of these, PtCoO2, with a room temperatureresistivity of 1.8 microOhmcm for in-plane transport, is the most conducting ofall. The high conduction takes place in triangular lattice Pt layers, separatedby layers of Co-O octahedra, and the electronic structure is determined by theinterplay of the two types of layer. We present a detailed study of quantumoscillations in PtCoO2, at temperatures down to 35 mK and magnetic fields up to30 T. As for PdCoO2 and PdRhO2, the Fermi surface consists of a single cylinderwith mainly Pt character, and an effective mass close to the free electronvalue. Due to Fermi-surface warping, two close-lying high frequencies areobserved. Additionally, a pronounced difference frequency appears. By analysingthe detailed angular dependence of the quantum-oscillation frequencies, weestablish the warping parameters of the Fermi surface. We compare these resultsto the predictions of first-principles electronic structure calculationsincluding spin-orbit coupling on Pt and Co and on-site correlation U on Co, andhence demonstrate that electronic correlations in the Co-O layers play animportant role in determining characteristic features of the electronicstructure of PtCoO2.

The Fermi surface of PtCoO2 from quantum oscillations and electronic structure calculations