Characterization of atomic step structures on CaF2(111) by their electric potential

DC FieldValueLanguage
dc.contributor.authorPieper, H. H.
dc.contributor.authorBarth, C.
dc.contributor.authorReichling, M.
dc.date.accessioned2021-12-23T16:07:17Z-
dc.date.available2021-12-23T16:07:17Z-
dc.date.issued2012
dc.identifier.issn00036951
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/7799-
dc.description.abstractThe structure and polarity of step edges on cleaved CaF2(111) are investigated by non-contact atomic force microscopy (NC-AFM) and Kelvin probe force microscopy. Ledges produced by cleaving the crystal appear with two distinctly different polarities denoted as type I and type II arising from the sectioning of ledges with steps having different polarities. With respect to the stoichiometric terrace, the surface potential is slightly reduced at ledges predominately composed of type I steps, while the potential of ledges predominantly composed of type II steps is significantly higher (typically 100 mV). We propose that the positive potential of type II steps stems from low coordinated Ca2+ ions inducing a dipole at step edges and confirm this by atomically resolved NC-AFM images revealing the Ca2+ ion sub-lattice with repulsive-mode imaging contrast. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4739944]
dc.description.sponsorshipCOST ActionEuropean Cooperation in Science and Technology (COST) [CM1104]; Stimulating discussions with Claude R. Henry and Philipp Rahe are gratefully acknowledged. This work has been supported by the COST Action CM1104.
dc.language.isoen
dc.publisherAMER INST PHYSICS
dc.relation.ispartofAPPLIED PHYSICS LETTERS
dc.subjectCAF2
dc.subjectCLEAVAGE
dc.subjectCRYSTALS
dc.subjectGROWTH
dc.subjectLAYER
dc.subjectMAGNETORESISTANCE
dc.subjectPhysics
dc.subjectPhysics, Applied
dc.subjectPROBE FORCE MICROSCOPY
dc.subjectROOM-TEMPERATURE
dc.subjectSURFACE
dc.titleCharacterization of atomic step structures on CaF2(111) by their electric potential
dc.typejournal article
dc.identifier.doi10.1063/1.4739944
dc.identifier.isiISI:000307676600018
dc.description.volume101
dc.description.issue5
dc.contributor.orcid0000-0003-3186-9000
dc.contributor.orcid0000-0003-4250-4533
dc.contributor.researcheridB-1123-2011
dc.contributor.researcheridG-3543-2014
dc.identifier.eissn10773118
dc.publisher.place1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
dcterms.isPartOf.abbreviationAppl. Phys. Lett.
crisitem.author.deptFB 04 - Physik-
crisitem.author.deptidfb04-
crisitem.author.orcid0000-0003-3186-9000-
crisitem.author.parentorgUniversität Osnabrück-
crisitem.author.netidReMi818-
Show simple item record

Page view(s)

3
Last Week
0
Last month
0
checked on Apr 21, 2024

Google ScholarTM

Check

Altmetric