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We report on the fabrication and performance of a new kind of tip for scanning tunneling microscopy. By fully incorporating a metallic tip on a silicon chip using modern micromachining and nanofabrication techniques, we realize so-called…

We study the light emission from a Ag(111) surface when the bias voltage on a scanning tunneling microscope (STM) junction is ramped into the field emission regime. Above the vacuum level, scanning tunneling spectroscopy (STS) shows a…

Mesoscale and Nanoscale Physics · Physics 2015-06-18 Jesús Martínez-Blanco , Stefan Fölsch

Cesium adsorption structures on Ag(111) were characterized in a low-temperature scanning tunneling microscopy experiment. At low coverages, atomic resolution of individual Cs atoms is occasionally suppressed in regions of an otherwise…

Materials Science · Physics 2009-11-13 M. Ziegler , J. Kroeger , R. Berndt , A. Filinov , M. Bonitz

Scanning transmission electron microscopy is a common tool used to study the atomic structure of materials. It is an inherently multimodal tool allowing for the simultaneous acquisition of multiple information channels. Despite its…

Theory predicts that the currents in scanning tunneling microscopy (STM) and the attractive forces measured in atomic force microscopy (AFM) are directly related. Atomic images obtained in an attractive AFM mode should therefore be…

Materials Science · Physics 2007-05-23 S. Hembacher , F. J. Giessibl , J. Mannhart , C. F. Quate

We consider a tunnel junction between two arbitrary non-linear systems in any dimension, which can be different. We show that the tunneling charge can be detected using three alternative methods based on current measurements. Besides being…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 Ines Safi , Eugene V. Sukhorukov

One of the daunting challenges in modern low temperature scanning tunneling microscopy (STM) is the difficulty of combining atomic resolution with cryogen free cooling. Further functionality needs, such as ultra-high vacuum (UHV), high…

Mesoscale and Nanoscale Physics · Physics 2024-04-09 Angela M. Coe , Guohong Li , Eva Y. Andrei

We theoretically investigate spin-polarized transport in a system composed of a ferromagnetic Scanning Tunneling Microscope (STM) tip coupled to an adsorbed atom (adatom) on a host surface. Electrons can tunnel directly from the tip to the…

Mesoscale and Nanoscale Physics · Physics 2011-09-21 P. H. Penteado , F. M. Souza , A. C. Seridonio , E. Vernek , J. C. Egues

Storing and accessing information in atomic-scale magnets requires magnetic imaging techniques with single-atom resolution. Here, we show simultaneous detection of the spin-polarization and exchange force, with or without the flow of…

Mesoscale and Nanoscale Physics · Physics 2017-08-16 Nadine Hauptmann , Jan W. Gerritsen , Daniel Wegner , Alexander A. Khajetoorians

Tunnelling between non-centrosymmetric superconductors with significant spin-orbit splitting is studied theoretically in a two-band treatment of the problem. We find that the critical Josephson current may be modulated by changing the…

Superconductivity · Physics 2007-05-23 K. Børkje , A. Sudbø

We evaluate the differential conductance measured in a scanning tunneling microscopy (STM) setting at arbitrary electron transmission between an STM tip and a two-dimensional (2D) superconductor with arbitrary gap structure. Our analytical…

Superconductivity · Physics 2023-05-30 P. O. Sukhachov , Felix von Oppen , L. I. Glazman

An AC susceptometer operating in the range of 10 Hz to 100 kHz and at room temperature is designed, built, calibrated and used to characterize the magnetic behaviour of coated magnetic nanoparticles. Other weakly magnetic materials (in…

Instrumentation and Detectors · Physics 2013-12-18 M. Alderighi , G. Bevilacqua , V. Biancalana , Y. Dancheva , A. Khanbekyan , L. Moi

Scanning Surface Potential Microscopy (SSPM) is one of the most widely used techniques for the characterization of electrical properties at small dimensions. Applicability of SSPM and related electrostatic scanning probe microscopies for…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Sergei V. Kalinin , Marcus Freitag , A. T. Johnson , Dawn A. Bonnell

In the last decade, detecting spin dynamics at the atomic scale has been enabled by combining techniques like electron spin resonance (ESR) or pump-probe spectroscopy with scanning tunneling microscopy (STM). Here, we demonstrate an…

We present a new concept of scanning thermal nanoprobe that utilizes the extreme thermal conductance of a carbon nanotube (CNT) to channel heat between the probe and the sample. The integration of CNT in scanning thermal microscopy (SThM)…

Mesoscale and Nanoscale Physics · Physics 2013-05-28 Peter D. Tovee , Manuel E. Pumarol , Mark C. Rosamond , Robert Jones , Michael C. Petty , Dagou A. Zeze , Oleg V. Kolosov

A microscopic theory of the transport in a scanning tunnelling microscope (STM) set-up is introduced for \pi-conjugated molecules on insulating films, based on the density matrix formalism. A key role is played in the theory by the energy…

Mesoscale and Nanoscale Physics · Physics 2012-05-23 Sandra Sobczyk , Andrea Donarini , Milena Grifoni

After evaporation of the organic solvents, benzene, toluene, and cyclohexane on gold substrates, Scanning Tunneling Microscope (STM) shows the presence of a remaining adsorbed layer. The different solvent molecules were individually…

We use conducting-tip atomic force microscopy (AFM) to measure local electronic properties of single wall carbon nanotube (SWNT) circuits on insulating substrates. When a voltage is applied to the tip and AFM feedback is used to position…

Mesoscale and Nanoscale Physics · Physics 2016-08-15 M. Freitag , M. Radosavljević , W. Clauss , A. T. Johnson

The advent of milli-kelvin scanning tunneling microscopes (STM) with inbuilt magnetic fields has opened access to the study of magnetic phenomena with atomic resolution at surfaces. In the case of single atoms adsorbed on a surface, the…

Mesoscale and Nanoscale Physics · Physics 2012-06-19 Jean-Pierre Gauyacq , Nicolas Lorente , Frederico Dutilh Novaes

Many atomically thin exfoliated 2D materials degrade when exposed to ambient conditions. They can be protected and investigated by means of transport and optical measurements if they are encapsulated between chemically inert single layers…

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