Universität zu Köln

Schumacher, Stefan, Foerster, Daniel F., Hu, Feiming, Frauenheim, Thomas ORCID: 0000-0002-3073-0616, Wehling, Tim O. and Michely, Thomas ORCID: 0000-0003-1657-1847 (2014). Polar EuO(111) on Ir(111): A two-dimensional oxide. Phys. Rev. B, 89 (11). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1550-235X

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Abstract

Through reactive molecular-beam epitaxy or Eu postoxidation and postannealing, large EuO(111) bilayer islands of high quality and exceptional stability are grown on Ir(111). We use scanning tunneling microscopy, low-energy electron diffraction, magneto-optical Kerr effect measurements, and density functional theory to characterize the properties of this ultrathin polar rare-earth metal oxide in atomistic detail. We analyze the crystallographic properties and their growth dependence, the film morphology including the atomic structure of defects, the mechanisms for reduction in the electrostatic potential related to the film polarity, as well as the work function, thermal stability, and magnetic properties, resulting in a comprehensive picture of this new two-dimensional material.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schumacher, Stefan UNSPECIFIED UNSPECIFIED UNSPECIFIED Foerster, Daniel F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hu, Feiming UNSPECIFIED UNSPECIFIED UNSPECIFIED Frauenheim, Thomas UNSPECIFIED orcid.org/0000-0002-3073-0616 UNSPECIFIED Wehling, Tim O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Michely, Thomas UNSPECIFIED orcid.org/0000-0003-1657-1847 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-443462
DOI:	10.1103/PhysRevB.89.115410
Journal or Publication Title:	Phys. Rev. B
Volume:	89
Number:	11
Date:	2014
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1550-235X
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics II
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language 111 SURFACE; ELECTRONIC-STRUCTURE; IONIC-CRYSTAL; WORK FUNCTION; PT(111); FILMS; GROWTH; EUO; PHOTOEMISSION; AU(111) Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/44346