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Park C, Yoon M. Topography inversion in scanning tunneling microscopy of single-atom-thick materials from penetrating substrate states. Sci Rep 2022; 12:7321. [PMID: 35513468 PMCID: PMC9072348 DOI: 10.1038/s41598-022-10870-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 04/12/2022] [Indexed: 11/21/2022] Open
Abstract
Scanning tunneling microscopy (STM) is one of the indispensable tools to characterize surface structures, but the distinction between atomic geometry and electronic effects based on the measured tunneling current is not always straightforward. In particular, for single-atomic-thick materials (graphene or boron nitride) on metallic substrates, counterintuitive phenomena such as a larger tunneling current for insulators than for metal and a topography opposite to the atomic geometry are reported. Using first-principles density functional theory calculations combined with analytical modeling, we reveal the critical role of penetrating states of metallic substrates that surpass 2D material states, hindering the measurement of intrinsic 2D materials states and leading to topography inversion. Our finding should be instrumental in the interpretation of STM topographies of atomic-thick materials and in the development of 2D material for (opto)electronic and various quantum applications.
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Affiliation(s)
- Changwon Park
- School of Computational Sciences, Korea Institute for Advanced Study, Hoegiro 85, Seoul, 02455, Republic of Korea.
| | - Mina Yoon
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
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Szitás Á, Farkas AP, Faur V, Nikolett B, Kiss J, Kónya Z. Investigation of the adsorption properties of cyclic C6 molecules on h-BN/Rh(111) surface, efforts to cover the boron nitride nanomesh by graphene. SURFACES AND INTERFACES 2022. [DOI: 10.1016/j.surfin.2022.102034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Meera MS, Sasidharan SK, Hossain A, Kiss J, Kónya Z, Elias L, Shibli SMA. Effect of Excess B in Ni 2P-Coated Boron Nitride on the Photocatalytic Hydrogen Evolution from Water Splitting. ACS APPLIED ENERGY MATERIALS 2022. [DOI: 10.1021/acsaem.1c04086] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Muraleedharan Sheela Meera
- Department of Chemistry, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala 695 581, India
| | - Sreekala Keerthi Sasidharan
- Department of Nanotechnology, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala 695 581, India
| | - Aslam Hossain
- Centre for Renewable Energy and Materials, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala 695 581, India
| | - János Kiss
- ELKH-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Rerrich B. 1., H-6720 Szeged, Hungary
| | - Zoltán Kónya
- ELKH-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Rerrich B. 1., H-6720 Szeged, Hungary
- Department of Applied and Environmental Chemistry, University of Szeged, Rerrich B. 1., H-6720 Szeged, Hungary
| | - Liju Elias
- Department of Chemistry, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala 695 581, India
| | - Sheik Muhammadhu Aboobakar Shibli
- Department of Chemistry, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala 695 581, India
- Centre for Renewable Energy and Materials, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala 695 581, India
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Szitás Á, Gubó R, Pásztor T, Farkas AP, Ajtai T, Óvári L, Palotás K, Berkó A, Kónya Z. Adsorption of Azobenzene on Hexagonal Boron Nitride Nanomesh Supported by Rh(111). THE JOURNAL OF PHYSICAL CHEMISTRY C 2020; 124:14182-14194. [PMID: 32952773 PMCID: PMC7493209 DOI: 10.1021/acs.jpcc.0c01725] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 06/03/2020] [Indexed: 11/29/2022]
Abstract
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Adsorption
properties of azobenzene, the prototypical molecular
switch, were investigated on a hexagonal boron nitride (h-BN) monolayer
(“nanomesh”) prepared on Rh(111). The h-BN layer was
produced by decomposing borazine (B3N3H6) at 1000–1050 K. Temperature-programmed desorption
(TPD) studies revealed that azobenzene molecules adsorbed on the “wire”
and “pore” regions desorb at slightly different temperatures.
Angle-resolved high-resolution electron energy loss spectroscopy (HREELS)
measurements demonstrated that the first molecular layer is characterized
predominantly by an adsorption geometry with the molecular plane parallel
to the surface. Scanning tunneling microscopy (STM) indicated a clear
preference for adsorption in the pores, manifesting a templating effect,
but in some cases one-dimensional molecular stripes also form, implying
attractive molecule–molecule interaction. Density functional
theory (DFT) calculations provided further details regarding the adsorption
energetics and bonding and confirmed the experimental findings that
the molecules adsorb with the phenyl rings parallel to the surface,
preferentially in the pores, and indicated also the presence of an
attractive molecule–molecule interaction.
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Affiliation(s)
- Á Szitás
- Department of Applied and Environmental Chemistry, University of Szeged, Rerrich B. tér 1, H-6720 Szeged, Hungary
| | - R Gubó
- Department of Applied and Environmental Chemistry, University of Szeged, Rerrich B. tér 1, H-6720 Szeged, Hungary.,ELI-ALPS, ELI-HU Non-Profit Ltd., Wolfgang Sandner utca 3, H-6728 Szeged, Hungary
| | - T Pásztor
- MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Rerrich B. tér 1, H-6720 Szeged, Hungary
| | - A P Farkas
- ELI-ALPS, ELI-HU Non-Profit Ltd., Wolfgang Sandner utca 3, H-6728 Szeged, Hungary.,MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Rerrich B. tér 1, H-6720 Szeged, Hungary
| | - T Ajtai
- ELI-ALPS, ELI-HU Non-Profit Ltd., Wolfgang Sandner utca 3, H-6728 Szeged, Hungary.,Department of Optics and Quantum Electronics, University of Szeged, Dóm tér 9, H-6720 Szeged, Hungary
| | - L Óvári
- ELI-ALPS, ELI-HU Non-Profit Ltd., Wolfgang Sandner utca 3, H-6728 Szeged, Hungary.,MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Rerrich B. tér 1, H-6720 Szeged, Hungary
| | - K Palotás
- MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Rerrich B. tér 1, H-6720 Szeged, Hungary.,Institute for Solid State Physics and Optics, Wigner Research Center for Physics, P. O. Box 49, H-1525 Budapest, Hungary
| | - A Berkó
- MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Rerrich B. tér 1, H-6720 Szeged, Hungary
| | - Z Kónya
- Department of Applied and Environmental Chemistry, University of Szeged, Rerrich B. tér 1, H-6720 Szeged, Hungary.,MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Rerrich B. tér 1, H-6720 Szeged, Hungary
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Farkas AP, Szitás Á, Jurdi D, Palotás K, Kiss J, Kónya Z. Selective transformation of ethanol to acetaldehyde catalyzed by Au/h-BN interface prepared on Rh(111) surface. APPLIED CATALYSIS A-GENERAL 2020. [DOI: 10.1016/j.apcata.2020.117440] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Palotás K, Óvári L, Vári G, Gubó R, Farkas AP, Kiss J, Berkó A, Kónya Z. Au–Rh Surface Structures on Rh(111): DFT Insights into the Formation of an Ordered Surface Alloy. THE JOURNAL OF PHYSICAL CHEMISTRY C 2018. [DOI: 10.1021/acs.jpcc.8b05744] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Krisztián Palotás
- Department of Complex Physical Systems, Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9., SK-84511 Bratislava, Slovakia
- MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Rerrich B. tér 1., H-6720 Szeged, Hungary
- Department of Theoretical Physics, Budapest University of Technology and Economics, Budafoki út 8., H-1111 Budapest, Hungary
| | - László Óvári
- MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Rerrich B. tér 1., H-6720 Szeged, Hungary
- ELI-ALPS, ELI-HU Nonprofit Ltd., Dugonics tér 13., H-6720 Szeged, Hungary
| | - Gábor Vári
- Department of Applied and Environmental Chemistry, University of Szeged, Rerrich B. tér 1., H-6720 Szeged, Hungary
| | - Richárd Gubó
- ELI-ALPS, ELI-HU Nonprofit Ltd., Dugonics tér 13., H-6720 Szeged, Hungary
- Department of Applied and Environmental Chemistry, University of Szeged, Rerrich B. tér 1., H-6720 Szeged, Hungary
| | - Arnold P. Farkas
- MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Rerrich B. tér 1., H-6720 Szeged, Hungary
- ELI-ALPS, ELI-HU Nonprofit Ltd., Dugonics tér 13., H-6720 Szeged, Hungary
| | - János Kiss
- MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Rerrich B. tér 1., H-6720 Szeged, Hungary
| | - András Berkó
- MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Rerrich B. tér 1., H-6720 Szeged, Hungary
| | - Zoltán Kónya
- MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Rerrich B. tér 1., H-6720 Szeged, Hungary
- Department of Applied and Environmental Chemistry, University of Szeged, Rerrich B. tér 1., H-6720 Szeged, Hungary
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Effect of Gold on the Adsorption Properties of Acetaldehyde on Clean and h-BN Covered Rh(111) Surface. Top Catal 2018. [DOI: 10.1007/s11244-018-0979-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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