Regensburg 2022 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 72: 2D Materials 3: hBN and Electronic Structure
O 72.1: Vortrag
Donnerstag, 8. September 2022, 15:00–15:15, S052
Electronic Structure of Two-Dimensional CoO2 — Ann Julie U. Holt1, Sahar Pakdel1, Jonathan Rodríguez-Fernández2, Yu Zhang3, Davide Curcio1, Zhaozong Sun4, Paolo Lacovig5, Yong-Xin Yao6,7, Jeppe V. Lauritsen4, Silvano Lizzit5, Nicola Lanatà1,8, Philip Hofmann1, Marco Bianchi1, and •Charlotte E. Sanders3 — 1Dept. of Physics and Astronomy, Interdisciplinary Nanoscience Center (iNANO), Aarhus Univ., 8000 Aarhus, DK — 2Dept. of Physics, Univ. of Oviedo, Oviedo 33007 ES — 3UK Central Laser Facility, RCaH, STFC RAL, Didcot, Oxfordshire OX11 0QX, UK — 4Interdisciplinary Nanoscience Center (iNANO), Aarhus Univ., 8000 Aarhus, DK — 5Elettra Sincrotrone Trieste S.C.p.A., AREA Science Park, Strada Statale 14, km 163.5, 34149 Trieste, IT — 6Ames Laboratory U.S.-DOE, Ames, IA 50011, USA — 7Dept. of Physics and Astronomy, Iowa State Univ., Ames, IA 50011, USA — 8Nordita, KTH Royal Institute of Technology and Stockholm Univ., Roslagstullsbacken 23, 10691 Stockholm, SE
The transition metal oxide CoO2 forms bulk layered structures that exhibit complex correlated electronic states. However, little has been known about the electronic properties of the isolated single layer. We have now [1] studied CoO2/Au(111), using angle-resolved photoemission spectroscopy, x-ray photoelectron diffraction, and density functional theory. The results of our study show single-layer CoO2 to be metallic, with electronic correlations. They emphasize the interest of oxides as a new subject within two-dimensional materials research. [1] 2D Mater. 8 (2021) 035050.