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Superperiodic patterns near a step edge were observed by STM on several-layer-thick graphite sheets on a highly oriented pyrolitic graphite substrate, where a dislocation network is generated at the interface between the graphite overlayer…

Superperiodic patterns with a long distance in a nanographene sheet observed by STM are discussed in terms of the interference of electronic wave functions. The period and the amplitude of the oscillations decrease spatially in one…

Materials Science · Physics 2016-08-31 Kikuo Harigaya , Yousuke Kobayashi , Kazuyuki Takai , Jerome Ravier , Toshiaki Enoki

We report on the Scanning Tunneling Microscope (STM) observation of linear fringes together with spatially varying super-lattice structures on (0001) graphite (HOPG) surface. The structure, present in a region of a layer bounded by two…

Other Condensed Matter · Physics 2014-02-11 S. K. Choudhary , A. K. Gupta

Highly oriented pyrolitic graphite (HOPG) is an inert substrate with a structural honeycomb lattice, well suited for the growth of two-dimensional (2D) silicene layer. It was reported that when Si atoms are deposited on HOPG surface at room…

A description is given of a three-dimensional box-shaped graphene (BSG) nanostructure formed/uncovered by mechanical cleavage of highly oriented pyrolytic graphite (HOPG). The discovered nanostructure is a multilayer system of parallel…

Mesoscale and Nanoscale Physics · Physics 2016-11-15 Rostislav V. Lapshin

Antiferromagnetism in stacked nanographite is investigated with using the Hubbard-type model. We find that the open shell electronic structure can be an origin of the decreasing magnetic moment with the decrease of the inter-graphene…

We investigated the influence of thickness reduction on the transport properties of graphite microflakes. Using oxygen plasma etching we decreased the thickness of highly oriented pyrolytic graphite (HOPG) microflakes from $\sim 100$~nm to…

The direct experimental probing of locally varying lattice parameters and anisotropic lattice deformations in atomic multilayers is extremely challenging. Here, we develop a new combined numerical/graphical method for the analysis of…

Mesoscale and Nanoscale Physics · Physics 2019-09-13 Márton Szendrő , András Pálinkás , Péter Süle , Zoltán Osváth

We investigate the organized formation of strain, ripples and suspended features in macroscopic CVD-prepared graphene sheets transferred onto a corrugated substrate made of an ordered arrays of silica pillars of variable geometries.…

We employ scanning probe microscopy to reveal atomic structures and nanoscale morphology of graphene-based electronic devices (i.e. a graphene sheet supported by an insulating silicon dioxide substrate) for the first time. Atomic resolution…

Materials Science · Physics 2008-11-05 Masa Ishigami , J. H. Chen , W. G. Cullen , M. S. Fuhrer , E. D. Williams

We demonstrate that hexagonal graphene nanoflakes with zigzag edges display quantum interference (QI) patterns analogous to benzene molecular junctions. In contrast with graphene sheets, these nanoflakes also host magnetism. The cooperative…

Strongly Correlated Electrons · Physics 2019-02-26 Angelo Valli , Adriano Amaricci , Valentina Brosco , Massimo Capone

The ability to detect and distinguish quantum interference signatures is important for both fundamental research and for the realization of devices including electron resonators, interferometers and interference-based spin filters.…

We have observed with STM moir\'e patterns corresponding to the rotation of one graphene layer on HOPG surface. The moir\'e patterns were characterized by rotation angle and extension in the plane. Additionally, by identifying border…

Mesoscale and Nanoscale Physics · Physics 2013-07-15 M. Flores , E. Cisternas , J. D. Correa , P. Vargas

Catalytic hydrogenation of graphite has recently attracted renewed attention, as a route for nano-patterning of graphene and to produce graphene nano-ribbons. These reports show that metallic nanoparticles etch surface layers of graphite,…

Mesoscale and Nanoscale Physics · Physics 2015-06-05 Maya Lukas , Velimir Meded , Aravind Vijayaraghavan , Li Song , Pulickel M. Ajayan , Karin Fink , Wolfgang Wenzel , Ralph Krupke

Atomic modulations of two-dimensional materials using scanning tunneling microscope (STM) tip-induced forces modifies their mechanical and electrical properties. In situ topographic and spectroscopic probing through electrical tunneling has…

Materials Science · Physics 2022-02-02 N. Sarkar , P. R. Bandaru , R. C. Dynes

We use the tip of the scanning tunneling microscope (STM) to manipulate single weakly bound nanometer-sized sheets on the the highly oriented pyrolytic graphite (HOPG) surface through artifically increasing the tip and sample interaction in…

Chemical Physics · Physics 2014-05-06 Long Jing Yin , Wen Xiao Wang , Ke Ke Feng , Rui-Fen Dou , Jia-Cai Nie

Graphene nanopatterning on highly oriented pyrolytic graphite (HOPG) has previously been shown using both atomic force microscopy (AFM) and scanning tunneling microscopy (STM) based techniques, including folding of intrinsic step edges and…

Mesoscale and Nanoscale Physics · Physics 2018-12-27 Kim Akius , Jan van Ruitenbeek

We present an investigation of the atomic and electronic structure of graphene monolayer islands on the 6H-SiC(000-1)(3x3) (SiC(3x3)) surface reconstruction using scanning tunneling microscopy (STM) and spectroscopy (STS). The orientation…

Materials Science · Physics 2010-01-04 F. Hiebel , P. Mallet , L. Magaud , J. -Y. Veuillen

Recent experiments reveal that a scanning tunneling microscopy (STM) probe tip can generate a highly localized strain field in a graphene drumhead, which in turn leads to pseudomagnetic fields in the graphene that can spatially confine…

Designing platforms to control phase-coherence and interference of electron waves is a cornerstone for future quantum electronics, computing or sensing. Nanoporous graphene (NPG) consisting of linked graphene nanoribbons has recently been…

Mesoscale and Nanoscale Physics · Physics 2019-11-07 Gaetano Calogero , Nick R. Papior , Bernhard Kretz , Aran Garcia-Lekue , Thomas Frederiksen , Mads Brandbyge
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