Scanning Tunneling Microscopy And Spectroscopy Studies Of Graphene

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Scanning Tunneling Microscopy and Spectroscopy Studies of Graphene

Author : Adina Luican-Mayer
Publisher :
ISBN 13 :
Total Pages : 143 pages
Book Rating : 4.:/5 (829 download)

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Book Synopsis Scanning Tunneling Microscopy and Spectroscopy Studies of Graphene by : Adina Luican-Mayer

Download or read book Scanning Tunneling Microscopy and Spectroscopy Studies of Graphene written by Adina Luican-Mayer and published by . This book was released on 2012 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the two-dimensional (2D) lattice of graphene, consisting of carbon atoms arranged in a honeycomb lattice, the charge carriers are described by a Dirac-Weyl Hamiltonian. Seeking to understand their unique nature, this thesis presents results of scanning tunneling microscopy (STM) and spectroscopy (STS) experiments at low temperatures and in magnetic fi eld. These techniques give access, down to atomic scales, to structural information as well as to the electronic properties of graphene. The main findings include the observation of quantized Landau levels (LL) in the presence of magnetic field, their dependence on carrier density and e ffects of charged impurities and other disorder on the LL spectrum. Twisting graphene layers away from the equilibrium Bernal stacking leads to the formation of Moir e patterns that signi ficantly alter the electronic properties of graphene stacks. The second part of the thesis discusses the eff ects of such rotations on the electronic properties as a function of twist angle.

Controlled Synthesis and Scanning Tunneling Microscopy Study of Graphene and Graphene-Based Heterostructures

Author : Mengxi Liu
Publisher : Springer
ISBN 13 : 981105181X
Total Pages : 106 pages
Book Rating : 4.8/5 (11 download)

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Book Synopsis Controlled Synthesis and Scanning Tunneling Microscopy Study of Graphene and Graphene-Based Heterostructures by : Mengxi Liu

Download or read book Controlled Synthesis and Scanning Tunneling Microscopy Study of Graphene and Graphene-Based Heterostructures written by Mengxi Liu and published by Springer. This book was released on 2017-10-10 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis focuses on the energy band engineering of graphene. It presents pioneering findings on the controlled growth of graphene and graphene-based heterostructures, as well as scanning tunneling microscopy/scanning tunneling spectroscopy (STM/STS) studies on their electronic structures. The thesis primarily investigates two classes of graphene-based systems: (i) twisted bilayer graphene, which was synthesized on Rh substrates and manifests van Hove singularities near Fermi Level, and (ii) in-plane h-BN-G heterostructures, which were controllably synthesized in an ultrahigh vacuum chamber and demonstrate intriguing electronic properties on the interface. In short, the thesis offers revealing insights into the energy band engineering of graphene-based nanomaterials, which will greatly facilitate future graphene applications.

Scanning Tunneling Microscopy and Spectroscopy of Adatoms on Graphene

Author : Mike Gyamfi
Publisher :
ISBN 13 : 9783843905350
Total Pages : 135 pages
Book Rating : 4.9/5 (53 download)

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Book Synopsis Scanning Tunneling Microscopy and Spectroscopy of Adatoms on Graphene by : Mike Gyamfi

Download or read book Scanning Tunneling Microscopy and Spectroscopy of Adatoms on Graphene written by Mike Gyamfi and published by . This book was released on 2012 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scanning Tunneling Microscopy and Spectroscopy Investigations of Graphene on Ru(0001) and (CO+O) on Rh(111)

Author : Stefano Marchini
Publisher :
ISBN 13 :
Total Pages : 117 pages
Book Rating : 4.:/5 (222 download)

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Book Synopsis Scanning Tunneling Microscopy and Spectroscopy Investigations of Graphene on Ru(0001) and (CO+O) on Rh(111) by : Stefano Marchini

Download or read book Scanning Tunneling Microscopy and Spectroscopy Investigations of Graphene on Ru(0001) and (CO+O) on Rh(111) written by Stefano Marchini and published by . This book was released on 2007 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scanning Tunneling Microscopy and Spectroscopy of Graphene on Semiconducting Surfaces

Author : Justin C. Koepke
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (776 download)

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Book Synopsis Scanning Tunneling Microscopy and Spectroscopy of Graphene on Semiconducting Surfaces by : Justin C. Koepke

Download or read book Scanning Tunneling Microscopy and Spectroscopy of Graphene on Semiconducting Surfaces written by Justin C. Koepke and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to better understand the perturbation of the physical and electronic structure of graphene monolayers and bilayers due to interactions with the supporting substrate, we have utilized scanning tunneling microscopy (STM) and spectroscopy (STS) to probe the graphene-substrate interaction for graphene on several different semiconducting substrates in ultrahigh vacuum (UHV). The Si(100) 0́3 2©71:H, GaAs(110), InAs(110), and Si(111) 0́3 7©77 surfaces used in this study were prepared in the UHV-STM chamber. We deposited monolayer and bilayer graphene features on the surfaces through a dry contact transfer (DCT) technique in the UHV system. The graphene-substrate interaction for the surfaces used in this study varied from quite inert and non-perturbing for the Si(100) 0́3 2©71:H surface to highly disruptive and strongly interacting for the Si(111) 0́3 7©77 surface. Graphene monolayer features on the GaAs(110), InAs(110), and Si(111) 0́3 7©77 surfaces exhibit a semi-transparency effect wherein the atomic structure of the substrate beneath the graphene is clearly resolved through the graphene monolayer. Bilayer graphene features on the GaAs(110) and InAs(110) surfaces do not show this behavior; however, bilayer graphene features on the Si(111) 0́3 7©77 surface do show the same effect. STM scans of the features at varying tip-sample biases reveal the different graphene-substrate interactions for the GaAs(110) and InAs(110) surfaces and the Si(111) 0́3 7©77 surface. STS measurements of monolayer graphene quantum dots on the Si(100) 0́3 2©71:H surface show an energy band gap with a scaling inversely proportional to the average lateral dimension of the features. STS measurements of graphene on the Si(111) 0́3 7©77 surface show metallic behavior, which is expected for the feature sizes studied on this surface.

Scanning Tunneling Microscopy and Spectroscopy Studies of Zinc Phthalocyanine Adsorption on SiC(0001) and Iridium Modified Silicon Surfaces

Download Scanning Tunneling Microscopy and Spectroscopy Studies of Zinc Phthalocyanine Adsorption on SiC(0001) and Iridium Modified Silicon Surfaces PDF Online Free

Author : Dylan Raymond Nicholls
Publisher :
ISBN 13 : 9781321010305
Total Pages : 128 pages
Book Rating : 4.0/5 (13 download)

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Book Synopsis Scanning Tunneling Microscopy and Spectroscopy Studies of Zinc Phthalocyanine Adsorption on SiC(0001) and Iridium Modified Silicon Surfaces by : Dylan Raymond Nicholls

Download or read book Scanning Tunneling Microscopy and Spectroscopy Studies of Zinc Phthalocyanine Adsorption on SiC(0001) and Iridium Modified Silicon Surfaces written by Dylan Raymond Nicholls and published by . This book was released on 2014 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scanning Tunneling Microscopy Studies of Fluorinated Graphene Films and Field-directed Sputter Sharpening

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (932 download)

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Book Synopsis Scanning Tunneling Microscopy Studies of Fluorinated Graphene Films and Field-directed Sputter Sharpening by :

Download or read book Scanning Tunneling Microscopy Studies of Fluorinated Graphene Films and Field-directed Sputter Sharpening written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scanning Tunneling Microscopy and Spectroscopy of Wet Chemical Synthesized Porous Graphene Nanoribbons in Ultra-high Vacuum

Author : Kaitlyn Ann Parsons
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (18 download)

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Book Synopsis Scanning Tunneling Microscopy and Spectroscopy of Wet Chemical Synthesized Porous Graphene Nanoribbons in Ultra-high Vacuum by : Kaitlyn Ann Parsons

Download or read book Scanning Tunneling Microscopy and Spectroscopy of Wet Chemical Synthesized Porous Graphene Nanoribbons in Ultra-high Vacuum written by Kaitlyn Ann Parsons and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scanning Tunneling Microscopy and Spectroscopy of Copper Phthalocyanine on Back-gated Graphene

Author : Paul Punke
Publisher :
ISBN 13 :
Total Pages : 83 pages
Book Rating : 4.:/5 (93 download)

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Book Synopsis Scanning Tunneling Microscopy and Spectroscopy of Copper Phthalocyanine on Back-gated Graphene by : Paul Punke

Download or read book Scanning Tunneling Microscopy and Spectroscopy of Copper Phthalocyanine on Back-gated Graphene written by Paul Punke and published by . This book was released on 2014 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scanning Tunneling Microscopy and Spectroscopy

Author : Dawn Bonnell
Publisher : Wiley
ISBN 13 : 9780471187356
Total Pages : 436 pages
Book Rating : 4.1/5 (873 download)

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Book Synopsis Scanning Tunneling Microscopy and Spectroscopy by : Dawn Bonnell

Download or read book Scanning Tunneling Microscopy and Spectroscopy written by Dawn Bonnell and published by Wiley. This book was released on 1993-03-29 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scanning tunneling microscopy (STM) provides three-dimensional real- space images of surfaces at high spatial resolution. When the surface is flat and clean, even atoms can be imaged. Its extreme usefulness has led it to near instantaneous acceptance as a characterization tool. This book covers fundamental concepts of STM operation, image interpretation, instrumentation, and techniques for various applications. It als contains advanced treatments of theory and spectroscopy. Surface physicists, electrochemists, materials scientists, and other scientists who see a use for STM will find the depth of coverage and accompanying reference lists in this book essential to their work. In addition, those who wish to add the capabilities of probe microscopy to their operations, such as microscopists and quality control engineers, will find the basic information in this book.

Intercalation of Sulfur in Epitaxial Graphene on Ruthenium(0001) Studied by Means of Scanning Tunneling Microscopy and Spectroscopy

Download Intercalation of Sulfur in Epitaxial Graphene on Ruthenium(0001) Studied by Means of Scanning Tunneling Microscopy and Spectroscopy PDF Online Free

Author : Ramon Bernardo Gavito
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Intercalation of Sulfur in Epitaxial Graphene on Ruthenium(0001) Studied by Means of Scanning Tunneling Microscopy and Spectroscopy by : Ramon Bernardo Gavito

Download or read book Intercalation of Sulfur in Epitaxial Graphene on Ruthenium(0001) Studied by Means of Scanning Tunneling Microscopy and Spectroscopy written by Ramon Bernardo Gavito and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Graphene

Author : Viera Skakalova
Publisher : Elsevier
ISBN 13 : 0857099337
Total Pages : 401 pages
Book Rating : 4.8/5 (57 download)

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Book Synopsis Graphene by : Viera Skakalova

Download or read book Graphene written by Viera Skakalova and published by Elsevier. This book was released on 2014-02-16 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graphene: Properties, Preparation, Characterisation and Devices reviews the preparation and properties of this exciting material. Graphene is a single-atom-thick sheet of carbon with properties, such as the ability to conduct light and electrons, which could make it potentially suitable for a variety of devices and applications, including electronics, sensors, and photonics. Chapters in part one explore the preparation of , including epitaxial growth of graphene on silicon carbide, chemical vapor deposition (CVD) growth of graphene films, chemically derived graphene, and graphene produced by electrochemical exfoliation. Part two focuses on the characterization of graphene using techniques including transmission electron microscopy (TEM), scanning tunneling microscopy (STM), and Raman spectroscopy. These chapters also discuss photoemission of low dimensional carbon systems. Finally, chapters in part three discuss electronic transport properties of graphene and graphene devices. This part highlights electronic transport in bilayer graphene, single charge transport, and the effect of adsorbents on electronic transport in graphene. It also explores graphene spintronics and nano-electro-mechanics (NEMS). Graphene is a comprehensive resource for academics, materials scientists, and electrical engineers working in the microelectronics and optoelectronics industries. Explores the graphene preparation techniques, including epitaxial growth on silicon carbide, chemical vapor deposition (CVD), chemical derivation, and electrochemical exfoliation Focuses on the characterization of graphene using transmission electron microscopy (TEM), scanning tunneling microscopy (STM), and Raman spectroscopy A comprehensive resource for academics, materials scientists, and electrical engineers

Physics and Chemistry of Graphene (Second Edition)

Author : Toshiaki Enoki
Publisher : CRC Press
ISBN 13 : 0429662793
Total Pages : 348 pages
Book Rating : 4.4/5 (296 download)

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Book Synopsis Physics and Chemistry of Graphene (Second Edition) by : Toshiaki Enoki

Download or read book Physics and Chemistry of Graphene (Second Edition) written by Toshiaki Enoki and published by CRC Press. This book was released on 2019-11-01 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graphene has been attracting growing attentions in physics, chemistry, and device applications after the discovery of micromechanically cleaved graphene sheet by A. Geim and K. Novoselov, who were awarded the 2010 Nobel Prize in Physics. The electronic structure of graphene, which is described in terms of massless Dirac fermions, brings about unconventional electronic properties, which are not only an important basic issue in condensed matter physics but also a promising target of cutting-edge electronics/spintronics device applications. Meanwhile, from chemistry aspect, graphene is the extreme of condensed polycyclic hydrocarbon molecules extrapolated to infinite size. Here, the concept on aromaticity, which organic chemists utilize, is applicable. Interesting issues appearing between physics and chemistry are pronounced in nanosized graphene (nanographene), as we recognize the importance of the shape of nanographene in understanding its electronic structure. This book comprehensively discusses the fundamental issues related to the electronic, magnetic, and chemical properties of condensed polycyclic hyodrocarbon molecules, nanographene, and graphene.

Characterization and Modification of Substrates for Scanning Tunneling Microscopy and Spectroscopy Studies of Nitrogen-doped Carbon Nanotubes

Download Characterization and Modification of Substrates for Scanning Tunneling Microscopy and Spectroscopy Studies of Nitrogen-doped Carbon Nanotubes PDF Online Free

Author : Hari Chandana Bellam
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.:/5 (693 download)

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Book Synopsis Characterization and Modification of Substrates for Scanning Tunneling Microscopy and Spectroscopy Studies of Nitrogen-doped Carbon Nanotubes by : Hari Chandana Bellam

Download or read book Characterization and Modification of Substrates for Scanning Tunneling Microscopy and Spectroscopy Studies of Nitrogen-doped Carbon Nanotubes written by Hari Chandana Bellam and published by . This book was released on 2005 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scanning Tunneling Spectroscopy of Graphene and Magnetic Nanostructures

Author : Victor Watson Brar
Publisher :
ISBN 13 :
Total Pages : 210 pages
Book Rating : 4.:/5 (769 download)

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Book Synopsis Scanning Tunneling Spectroscopy of Graphene and Magnetic Nanostructures by : Victor Watson Brar

Download or read book Scanning Tunneling Spectroscopy of Graphene and Magnetic Nanostructures written by Victor Watson Brar and published by . This book was released on 2010 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation is divided into two parts, both of which describe measurements where a scanning tunneling microscope (STM) is operated to perform measurements of novel physical systems. In the first section I describe spin-polarized STM (SP-STM) measurements on individual adatoms on a ferromagnetic surface. The aim of the first section is to illustrate how a SP-STM can be used to probe magnetic phenomena at the atomic scale. After describing the explicit details of the SP-STM apparatus, I explain how to use SP-STM to study the magnetic coupling of different 3d adatoms (Fe, Cr and Cu) to a ferromagnetic surface. It is shown that the SP-STM is capable of distinguishing which species couple ferromagnetically vs. anti-ferromagnetically to the surface. The second section describes STM measurements performed on a graphene surface equipped with a back-gate electrode that can be used to vary the charge density of the graphene in situ. These measurements represent the first time an STM has been capable of measuring a gate-tunable surface, and this section describes the extra experimental and theoretical considerations that are required to set up such an experiment and accurately interpret the data. It is shown that electrons tunneling into graphene include a strong, phononmediated inelastic signal, and that an STM tip can be an invasive probe of graphene. After showing how to account for these effects, STM experiments are presented that examine (1) how impurities effect the large scale electronic structure of graphene, (2) how the quasiparticle lifetime in graphene depends on charge density, and (3) how Co adatoms can be reversibly ionized on graphene through the use of a back-gate electrode.

Atomic-scale Studies of Nanometer-sized Graphene Using Scanning Tunneling Microscopy on III-V Semiconductor Surfaces

Author : Kevin Tianyi He
Publisher :
ISBN 13 :
Total Pages : 126 pages
Book Rating : 4.:/5 (636 download)

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Book Synopsis Atomic-scale Studies of Nanometer-sized Graphene Using Scanning Tunneling Microscopy on III-V Semiconductor Surfaces by : Kevin Tianyi He

Download or read book Atomic-scale Studies of Nanometer-sized Graphene Using Scanning Tunneling Microscopy on III-V Semiconductor Surfaces written by Kevin Tianyi He and published by . This book was released on 2009 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Atomic-scale Characterization and Manipulation of Freestanding Graphene Using Adapted Capabilities of a Scanning Tunneling Microscope

Download Atomic-scale Characterization and Manipulation of Freestanding Graphene Using Adapted Capabilities of a Scanning Tunneling Microscope PDF Online Free

Author : Steven Dale Barber
Publisher :
ISBN 13 : 9781303855580
Total Pages : 212 pages
Book Rating : 4.8/5 (555 download)

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Book Synopsis Atomic-scale Characterization and Manipulation of Freestanding Graphene Using Adapted Capabilities of a Scanning Tunneling Microscope by : Steven Dale Barber

Download or read book Atomic-scale Characterization and Manipulation of Freestanding Graphene Using Adapted Capabilities of a Scanning Tunneling Microscope written by Steven Dale Barber and published by . This book was released on 2014 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graphene was the first two-dimensional material ever discovered, and it exhibits many unusual phenomena important to both pure and applied physics. To ensure the purest electronic structure, or to study graphene's elastic properties, it is often suspended over holes or trenches in a substrate. The aim of the research presented in this dissertation was to develop methods for characterizing and manipulating freestanding graphene on the atomic scale using a scanning tunneling microscope (STM). Conventional microscopy and spectroscopy techniques must be carefully reconsidered to account for movement of the extremely flexible sample. First, the acquisition of atomic-scale images of freestanding graphene using the STM and the ability to pull the graphene perpendicular to its plane by applying an electrostatic force with the STM tip are demonstrated. The atomic-scale images contained surprisingly large corrugations due to the electrostatic attractive force varying in registry with the local density of states. Meanwhile, a large range of control over the graphene height at a point was obtained by varying the tip bias voltage, and the application to strain engineering of graphene's so-called pseudomagnetic field is examined. Next, the effect of the tunneling current was investigated. With increasing current, the graphene sample moves away from the tip rather than toward it. It was determined that this must be due to local heating by the electric current, causing the graphene to contract because it has a negative coefficient of thermal expansion. Finally, by imaging a very small area, the STM can monitor the height of one location over long time intervals. Results sometimes exhibit periodic behavior, with a frequency and amplitude that depend on the tunneling current. These fluctuations are interpreted as low-frequency flexural phonon modes within elasticity theory. All of these findings set the foundation for employing a STM in the study of freestanding graphene.