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Turanský R, Palotás K, Brndiar J, Li YJ, Sugawara Y, Štich I. Subatomic-scale resolution with SPM: Co adatom on p(2 × 1)Cu(110):O. NANOTECHNOLOGY 2019; 30:095703. [PMID: 30523887 DOI: 10.1088/1361-6528/aaf6dc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We study the limits of SPM subatomic resolution in imaging orbital magnetic features on a model system of a Co atom on a p(2 × 1)Cu(110):O surface. We show that scanning tunneling spectroscopies allow the determination of the occupation of the Co d shells and the value of the Hubbard U in the DFT + U modeling, and that standard near-contact AFM can in principle image the asymmetry due to partial filling of the d shells at close distances in the small-amplitude regime. Due to the partially ionic character of Co, a faint asymmetry is predicted to also arise in the electrostatic force. We anticipate these features to be even stronger for a transition metal adsorbate featuring larger departures from sphericality in charge/spin densities.
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Affiliation(s)
- R Turanský
- Center for Comp. Mat. Science, Inst. of Physics, Slovak Acad. of Sciences, 84511 Bratislava, Slovakia
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Kinoshita Y, Turanský R, Brndiar J, Naitoh Y, Li YJ, Kantorovich L, Sugawara Y, Štich I. Promoting Atoms into Delocalized Long-Living Magnetically Modified State Using Atomic Force Microscopy. NANO LETTERS 2016; 16:7490-7494. [PMID: 27786489 DOI: 10.1021/acs.nanolett.6b03203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report on a low-temperature atomic force microscropy manipulation of Co atoms in ultrahigh vacuum on an oxidized copper surface in which the manipulated atom is kept delocalized above several surface unit cells over macroscopic times. The manipulation employed, in addition to the ubiquitous short-range tip-generated chemical forces, also long-range forces generated via Friedel oscillations of the metal charge density due to Co nanostructures prearranged on the surface by lateral manipulation. We show that our manipulation protocol requires mechanical control of the spin state of the Co atom.
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Affiliation(s)
- Y Kinoshita
- Department of Applied Physics, Osaka University , 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - R Turanský
- Institute of Physics, CCMS, Slovak Academy of Sciences , Dúbravská cesta 9, 845 11 Bratislava 45, Slovakia
| | - J Brndiar
- Institute of Physics, CCMS, Slovak Academy of Sciences , Dúbravská cesta 9, 845 11 Bratislava 45, Slovakia
| | - Y Naitoh
- Department of Applied Physics, Osaka University , 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Y J Li
- Department of Applied Physics, Osaka University , 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - L Kantorovich
- Department of Physics, Strand, King's College London , London, WC2R 2LS, United Kingdom
| | - Y Sugawara
- Department of Applied Physics, Osaka University , 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - I Štich
- Institute of Physics, CCMS, Slovak Academy of Sciences , Dúbravská cesta 9, 845 11 Bratislava 45, Slovakia
- Ruprecht A. Institute of Technology, Dubová 2243/11, Šamorín, Slovakia
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Bamidele J, Lee S, Kinoshita Y, Turanský R, Naitoh Y, Li Y, Sugawara Y, Štich I, Kantorovich L. Vertical atomic manipulation with dynamic atomic-force microscopy without tip change via a multi-step mechanism. Nat Commun 2014; 5:4476. [DOI: 10.1038/ncomms5476] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 06/20/2014] [Indexed: 11/09/2022] Open
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