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We report scanning tunneling microscopy (STM) images of surfaces of GaN films and the observation of luminescence from those films induced by highly spatially localized injection of electrons or holes using STM. This combination of scanning…

Condensed Matter · Physics 2009-10-28 B. Garni , Jian Ma , N. Perkins , Jutong Liu , T. F. Kuech , M. G. Lagally

The physical properties of ultrathin NaCl overlayers on the stepped Cu(311) surface have been characterized using scanning tunneling microscopy (STM) and spectroscopy, and density functional calculations. Simulations of STM images and…

Materials Science · Physics 2009-11-10 F. E. Olsson , M. Persson , J. Repp , G. Meyer

Scanning tunneling luminescence microscopy (STLM) along with scanning tunneling spectroscopy (STS) is applied to a step-bunched, oxidized 4H-SiC surface prepared on the silicon face of a commercial, n-type SiC wafer using a silicon melt…

We present a fast and efficient tight-binding (TB) method for simulating scanning tunneling microscopy (STM) imaging of adsorbate molecules on ultrathin insulating films. Due to the electronic decoupling of the molecule from the metal…

Materials Science · Physics 2015-05-13 Antti Korventausta , Sami Paavilainen , Eeva Niemi , Jouko Nieminen

Herein, we invesgate the consequence of local voltage pulses on the adsorption state of single indigo molecules on the Cu(111) surface as well as on the atomic structure underneath the molecule. With a scanning tunneling microscope, at 5 K,…

We present scanning tunneling microscopy (STM) images of single-layer graphene crystals examined under ultrahigh vacuum conditions. The samples, with lateral dimensions on the micron scale, were prepared on a silicon dioxide surface by…

Scanning tunneling microscopy (STM) is a fundamental tool for determination of the surface atomic structure. However, the interpretation of high resolution microscopy images is not straightforward. In this paper we provide a physical…

Materials Science · Physics 2019-07-23 Ruslan Zhachuk , Jose Coutinho

We prove that scanning tunneling microscopy (STM) images of sub-surface Mn atoms in GaAs are formed by hybridization of the impurity state with intrinsic surface states. They cannot be interpreted in terms of bulk-impurity wavefunction…

Materials Science · Physics 2009-11-13 J. -M. Jancu , J. -Ch. Girard , M. Nestoklon , A. Lemaitre , F. Glas , Z. Z. Wang

The Scanning Tunneling Microscope (STM) is a powerful instrument to study electronic density of states at surfaces down to atomic scale. Many interesting samples require studying variations as a function of the magnetic field, which is most…

Scanning tunnelling microscopy (STM) is a powerful technique for imaging surfaces with atomic resolution, providing insight into physical and chemical processes at the level of single atoms and molecules. A regular task of STM image…

We report the realization of STM-based lithography with silicon layers removal on the chlorinated Si(100)-2x1 surface at 77 K. In contrast to other STM lithography studies, we were able to remove locally both chlorine and silicon atoms.…

Mesoscale and Nanoscale Physics · Physics 2020-04-07 T. V. Pavlova , V. M. Shevlyuga , B. V. Andryushechkin , G. M. Zhidomirov , K. N. Eltsov

The properties of InAs (110) surfaces have been investigated by means of low-temperature scanning tunneling microscopy and spectroscopy. A technique for ex-situ sulphur passivation has been developed to form an accumulation layer on such a…

Mesoscale and Nanoscale Physics · Physics 2009-09-25 L. Canali , J. W. G. Wildoer , O. Kerkhof , L. P. Kouwenhoven

We report the construction and performance of a low temperature, high field scanning tunneling microscope (STM) operating down to 350mK and in magnetic fields up to 9T, with thin film deposition and in-situ cleaving capabilities. The main…

Graphene is a truly two-dimensional material with exceptional electronic, mechanical, and optical properties. As such, it consists of surface only and can be probed by the well developed surface-science techniques as, e.g., scanning…

Mesoscale and Nanoscale Physics · Physics 2012-04-18 Markus Morgenstern

Recent experimental studies have shown that well-annealed, unstrained Si(105) surfaces appear disordered and atomically rough when imaged using scanning tunnelling microscopy (STM). We construct new models for the Si(105) surface that are…

Condensed Matter · Physics 2009-11-10 C. V. Ciobanu , V. B. Shenoy , C. Z. Wang , K. M. Ho

Scanning Tunneling Microscopy (STM) has revolutionized our atomic scale understanding of surfaces and accelerated progress in nanotechnology. This technique, however, is restricted to metal or semiconducting samples, as it requires a tiny…

Instrumentation and Detectors · Physics 2026-04-16 M. J. Rost

The adequate interpretation of scanning tunneling microscopy (STM) images of the clean Si(001) surface is presented. We have performed both STM observations and {\it ab initio} simulations of STM images for buckled dimers on the clean…

Materials Science · Physics 2009-10-31 H. Okada , Y. Fujimoto , K. Endo , K. Hirose , Y. Mori

Systematic studies of the gradual fabrication by means of carbon ion-implantation of high-quality 6H-SiC layers on silicon surfaces have been carried out. The fluence of carbon ions varied from 5*10^15 cm-2 to 10^17 cm-2. Results of…

Scanning Tunneling Microscopy (STM) is a powerful technique that utilizes quantum tunneling to visualize atomic surfaces with high precision. This study presents detailed topographic maps and evaluates the local density of states (LDOS) for…

Mesoscale and Nanoscale Physics · Physics 2024-02-19 Dhananjay Saikumar

In this work, systematic constant-bias, variable-current scanning tunneling microscopy (STM) measurements and STM simulations from density-functional theory are made, yielding critical insights into the spatial structure of electrons in…

Mesoscale and Nanoscale Physics · Physics 2015-02-10 P. Xu , Y. Yang , S. D. Barber , M. L. Ackerman , J. K. Schoelz , I. A. Kornev , S. Barraza-Lopez , L. Bellaiche , P. M. Thibado
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