Giant surface charge density of graphene resolved from scanning tunneling microscopy and first-principles theory

نویسندگان

  • P. Xu
  • Y. Yang
  • S. D. Barber
  • M. L. Ackerman
  • J. K. Schoelz
  • Igor A. Kornev
  • Salvador Barraza-Lopez
  • L. Bellaiche
  • P. M. Thibado
چکیده

P. Xu,1 Y. Yang,1,2 S. D. Barber,1 M. L. Ackerman,1 J. K. Schoelz,1 Igor A. Kornev,3 Salvador Barraza-Lopez,1 L. Bellaiche,1 and P. M. Thibado1,* 1Department of Physics, The University of Arkansas, Fayetteville, Arkansas 72701, USA 2Physics Department, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China 3Laboratoire Structures, Proprietes et Modelisation des Solides, Ecole Centrale Paris, CNRS-UMR8580, Grande Voie des Vignes, F-92295 Chatenay-Malabry Cedex, France (Received 3 October 2011; published 24 October 2011)

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Graphene on Rh(111): Scanning tunneling and atomic force microscopies studies

The electronic and crystallographic structure of the graphene/Rh(111) moiré lattice is studied via combination of density-functional theory calculations and scanning tunneling and atomic force microscopy (STM and AFM). Whereas the principal contrast between hills and valleys observed in STM does not depend on the sign of applied bias voltage, the contrast in atomically resolved AFM images stron...

متن کامل

Imaging and Tuning Molecular Levels at the Surface of a Gated Graphene Device

Gate-controlled tuning of the charge carrier density in graphene devices provides new opportunities to control the behavior of molecular adsorbates. We have used scanning tunneling microscopy (STM) and spectroscopy (STS) to show how the vibronic electronic levels of 1,3,5-tris(2,2-dicyanovinyl)benzene molecules adsorbed onto a graphene/BN/SiO2 device can be tuned via application of a backgate v...

متن کامل

Scanning Tunneling Microscopy: Principle and Instrumentation

Scanning tunneling microscopy (STM) has been proven to be an extremely powerful tool for studying the electronic structures of solid-state systems. The STM topographic images, assisted by other surface analysis techniques with chemical specifity, lead to the structural determination of clean and adsorbate-covered surfaces. For example, the first atomically resolved STM image in history confirme...

متن کامل

Unraveling the Electronic Structure of Narrow Atomically Precise Chiral Graphene Nanoribbons

Recent advances in graphene-nanoribbon-based research have demonstrated the controlled synthesis of chiral graphene nanoribbons (chGNRs) with atomic precision using strategies of on-surface chemistry. However, their electronic characterization, including typical figures of merit like band gap or frontier band's effective mass, has not yet been reported. We provide a detailed characterization of...

متن کامل

Role of the Pinning Points in epitaxial Graphene Moiré Superstructures on the Pt(111) Surface

The intrinsic atomic mechanisms responsible for electronic doping of epitaxial graphene Moirés on transition metal surfaces is still an open issue. To better understand this process we have carried out a first-principles full characterization of the most representative Moiré superstructures observed on the Gr/Pt(111) system and confronted the results with atomically resolved scanning tunneling ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2011