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We describe an experimentally realistic situation of the quantum reflection of helium atoms from an oscillating surface. The temporal modulation of the potential induces clear sidebands in the reflection probability as a function of…

量子物理 · 物理学 2013-07-08 Benedikt Herwerth , Maarten DeKieviet , Javier Madronero , Sandro Wimberger

Although jammed packings of soft spheres exist in potential energy landscapes with a vast number of minima, when subjected to cyclic shear they may revisit the same configurations repeatedly. Simple hysteretic spin models, in which particle…

软凝聚态物质 · 物理学 2025-04-04 Chloe W. Lindeman , Sidney R. Nagel

In order to probe nanostructures on a surface we present a microscope based on the quantum recurrence phenomena. A cloud of atoms bounces off an atomic mirror connected to a cantilever and exhibits quantum recurrences. The times at which…

量子物理 · 物理学 2009-11-13 Farhan Saif

We investigated the electronic properties of the topological insulator Bi$_{2}$Te$_{3}$ by scanning tunneling microscopy and spectroscopy at low temperature. We obtained high-resolution quasiparticle interference data of the topological…

The scattering of 1D matter wave bright solitons on attractive potentials enables one to populate bound states, a feature impossible with noninteracting wave packets. Compared to noninteracting states, the populated states are renormalized…

量子气体 · 物理学 2016-09-13 F. Damon , B. Georgeot , D. Guéry-Odelin

The behavior of a polyelectrolyte adsorbed on a charged surface of high-dielectric constant is studied by both Monte-Carlo simulation and analytical methods. It is found that in a low ionic strength medium, the transition is first-order…

软凝聚态物质 · 物理学 2007-05-23 Chi-Ho Cheng , Pik-Yin Lai

A binary mixture of particles interacting via long-ranged repulsive forces is studied in gravity by computer simulation and theory. The more repulsive A-particles create a depletion zone of less repulsive B-particles around them reminiscent…

软凝聚态物质 · 物理学 2015-06-03 Tobias Kruppa , Tim Neuhaus , René Messina , Hartmut Löwen

Realistic oxide materials are often semiconductors, in particular at elevated temperatures, and their surfaces contain undercoordiated atoms at structural defects such as steps and corners. Using hybrid density-functional theory and ab…

Bulk nanobubbles (NBs) generated electrochemically by short voltage pulses of alternating polarity behave differently from those produced by regular methods. Only bubbles smaller than $200\;$nm are formed in the process and their…

软凝聚态物质 · 物理学 2021-02-08 Vitaly B. Svetovoy

Contacts between particles in dense, sheared suspensions are believed to underpin much of their rheology. Roughness and adhesion are known to constrain the relative motion of particles, and thus globally affect the shear response, but an…

The Aharonov-Bohm scattering of charged particles by the magnetic field of an infinitely long and infinitely thin solenoid (magnetic string) in an absorbing medium is studied. We discuss the partial-wave approach to this problem and show…

量子物理 · 物理学 2009-10-31 Juergen Audretsch , Vladimir Skarzhinsky

The interaction of a bulk electron with conducting surfaces is studied by means of Bohm-Pines transformation in the second quantization formalism. The effective interaction potentials are obtained for the case of one plane and two plane…

凝聚态物理 · 物理学 2007-05-23 M. Durgut , E. Mete

The vast majority of physical objects we are dealing with are almost exclusively made of atoms. Due to their discrete level structure, single atoms have proved to be emitters of light which is incompatible with the classical description of…

The tip of a scanning tunnelling microscope can inject hot electrons into a surface with atomic precision. Their subsequent dynamics and eventual decay can result in atomic manipulation of an adsorbed molecule, or in light emission from the…

化学物理 · 物理学 2019-07-19 Rebecca M. Purkiss , Henry G. Etheridge , Peter A. Sloan , Kristina R. Rusimova

Does the size of atoms present a lower limit to the size of electronic structures that can be fabricated in solids? This limit can be overcome by using devices that exploit quantum mechanical scattering of electron waves at atoms arranged…

其他凝聚态物理 · 物理学 2011-02-11 M. Sentef , A. P. Kampf , S. Hembacher , J. Mannhart

We report real space imaging measurements of inelastic Friedel oscillations. The inelastic electron tunneling spectroscopy, using scanning tunneling microscopy, around dimers of dichlorobenze adsorbates on Au(111) surface display clear…

介观与纳米尺度物理 · 物理学 2011-08-17 H. Gawronski , J. Fransson , K. Morgenstern

Frequency shifts, radiative decay rates, the Ohmic loss contribution to the nonradiative decay rates, fluorescence yields, and photobleaching of a two-level atom radiating anywhere inside or outside a complex spherical nanoshell, i.e. a…

量子物理 · 物理学 2007-05-23 Alexander Moroz

In this work we first study the quantum diffusion in a volume of a crystalline solid at high interstitial concentrations when the effects of the short-range interactions between the diffusing particles are to be factors. Within the scope of…

材料科学 · 物理学 2007-05-23 G. L. Buchbinder , V. N. Shapov

We investigated the nucleation process at the molecular level. Controlled sticking of individual atoms onto mass selected clusters over a wide mass range has been carried out for the first time. We measured the absolute unimolecular…

原子与分子团簇 · 物理学 2007-11-13 Fabien Chirot , Pierre Labastie , Sébastien Zamith , Jean-Marc L'Hermite

The energy spectrum of the extended attractive potential of a crystallographic row for negatively charged particles has quasi-bound states. It follows that a negatively charged particle with small transversal momentum component ($p_{\bot} R…

介观与纳米尺度物理 · 物理学 2015-01-12 Gennady V. Kovalev