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We demonstrate a high-performance apertureless near-field probe made of a tapered metal tip with a set of periodic shallow grooves near the apex. The spontaneous emission from a single emitter near the tip is investigated systematically for…

We analyze how a probing particle modifies the infrared electromagnetic near field of a sample. The particle, described by electric and magnetic polarizabilities, represents the tip of an apertureless scanning optical near-field microscope…

We introduce a new scanning probe technique derived from scanning gate microscopy (SGM) in order to investigate thermoelectric transport in two-dimensional semiconductor devices. The thermoelectric scanning gate Microscopy (TSGM) consists…

Mesoscale and Nanoscale Physics · Physics 2019-04-03 B. Brun , F. Martins , S. Faniel , A. Cavanna , C. Ulysse , A. Ouerghi , U. Gennser , D. Mailly , P. Simon , S. Huant , M. Sanquer , H. Sellier , V. Bayot , B. Hackens

Transverse electron focusing in two-dimensional electron gases (2DEGs) with strong spin-orbit coupling is revisited. The transverse focusing is related to the transmission between two contacts at the edge of a 2DEG when a perpendicular…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 Andres A. Reynoso , Gonzalo Usaj , C. A. Balseiro

We analyze an advanced two-spring model with an ultra-low effective tip mass to predict nontrivial and physically rich 'fine structure' in the atomic stick-slip motion in Friction Force Microscopy (FFM) experiments. We demonstrate that this…

Soft Condensed Matter · Physics 2009-11-13 D. Abel , S. Yu. Krylov , J. W. M. Frenken

Solid-state devices can be fabricated at the atomic scale, with applications ranging from classical logic to current standards and quantum technologies. While it is very desirable to probe these devices and the quantum states they host at…

Mesoscale and Nanoscale Physics · Physics 2020-06-23 Kevin S. H. Ng , Benoit Voisin , Brett C. Johnson , Jeffrey C. McCallum , Joe Salfi , Sven Rogge

The conductance of graphene nanoribbons and nanoconstrictions under the effect of a scanning gate microscopy tip is systematically studied. Using a scattering approach for noninvasive probes, the first- and second-order conductance…

Mesoscale and Nanoscale Physics · Physics 2023-02-20 Xianzhang Chen , Guillaume Weick , Dietmar Weinmann , Rodolfo A. Jalabert

Local variations in the Seebeck coefficient in low-dimensional materials-based nanostructures and devices play a major role in their thermoelectric performance. Unfortunately, currently most thermoelectric measurements probe the aggregate…

Mesoscale and Nanoscale Physics · Physics 2020-08-25 Achim Harzheim , Charalambos Evangeli , Oleg V. Kolosov , Pascal Gehring

The interaction of ferroelectric 180 degree domain wall with a strongly inhomogeneous electric field of biased Scanning Probe Microscope tip is analyzed within continuous Landau-Ginzburg-Devonshire theory. Equilibrium shape of the initially…

Accurate detection and characterization of nanoparticles within confined spaces is crucial for applications ranging from nanofluidics to biotechnology. We present a novel approach that combines interferometric scattering (iSCAT) detection…

Electrostatic force microscopy at cryogenic temperatures was used to probe the electrostatic interaction between a conductive atomic force microscopy tip and electronic charges trapped in an InAs quantum dot. Measurement of the…

Condensed Matter · Physics 2016-08-16 Aykutlu Dâna , Charles Santori , Yoshihisa Yamamoto

We investigate the proposed experimental setup for measuring the topological charge in a an Ising anyon system by means of Fabry-P\'erot interferometry with a chiral edge state. We show that such an interferometer has the unintended but not…

Strongly Correlated Electrons · Physics 2011-06-07 David J Clarke , Kirill Shtengel

Experiments with electron or ion matter waves require a coherent, monochromatic and long-term stable source with high brightness. These requirements are best fulfilled by single atom tip (SAT) field emitters. The performance of an iridium…

A detailed understanding of the material properties that affect the splitting between the two low-lying valley states in Si/SiGe heterostructures will be increasingly important as the number of spin qubits is increased. Scanning gate…

Mesoscale and Nanoscale Physics · Physics 2024-10-04 Efe Cakar , H. Ekmel Ercan , Gordian Fuchs , Artem O. Denisov , Christopher R. Anderson , Mark F. Gyure , Jason R. Petta

Approaching a two-component tip made of a superconductor (S) and a ferromagnet (F) from a magnetic sample allows for two distinct tunneling processes between the ferromagnets, through S: i) Charge and spin are conserved; ii) Charge and spin…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 D. Feinberg , G. Deutscher

Scanning tunneling spectroscopy requires the application of a potential difference between the sample and a tip. In metal-vacuum-metal junctions, one can safely assume that the potential is constant along the metallic substrate. Here, we…

Mesoscale and Nanoscale Physics · Physics 2020-12-22 Nils Krane , Christian Lotze , Nils Bogdanoff , Gael Reecht , Lei Zhang , Alejandro L. Briseno , Katharina J. Franke

In the earlier works, the electronic structure of the graphitic nanocone for the long distance from the tip was investigated. Here, we investigate the behaviour of the given nanostructure near the tip where in our approach hybridizations of…

Mesoscale and Nanoscale Physics · Physics 2015-11-10 R. Pincak , J. Smotlacha , M. Pudlak

We demonstrate a simple method to significantly improve the sharpness of standard silicon probes for an atomic force microscope, or to repair a damaged probe. The method is based on creating and maintaining a strong, spatially localized…

Mesoscale and Nanoscale Physics · Physics 2016-12-21 Alexei Temiryazev , Sergey I. Bozhko , A. Edward Robinson , Marina Temiryazeva

We describe a new type of scanning probe microscope based on a superconducting quantum interference device (SQUID) that resides on the apex of a sharp tip. The SQUID-on-tip is glued to a quartz tuning fork which allows scanning at a…

Superconductivity · Physics 2013-08-13 A. Finkler , D. Vasyukov , Y. Segev , L. Ne'eman , E. O. Lachman , M. L. Rappaport , Y. Myasoedov , E. Zeldov , M. E. Huber

We image equilibrium and non-equilibrium transport through a two-dimensional electronic cavity using scanning gate microscopy (SGM). Injecting electrons into the cavity through a quantum point contact close to equilibrium, we raster-scan a…