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Atomic nanowires formed by Au on Ge(001) are scrutinized for the band topology of the conduction electron system by k-resolved photoemission. Two metallic electron pockets are observed. Their Fermi surface sheets form straight lines without…

Strongly Correlated Electrons · Physics 2015-05-18 S. Meyer , J. Schaefer , C. Blumenstein , P. Hoepfner , A. Bostwick , J. L. McChesney , E. Rotenberg , R. Claessen

Atomic structures of quasi-one-dimensional (1D) character can be grown on semiconductor substrates by metal adsorption. Significant progress concerning study of their 1D character has been achieved recently by condensing noble metal atoms…

Strongly Correlated Electrons · Physics 2015-05-13 J. Schaefer , S. Meyer , C. Blumenstein , K. Roensch , R. Claessen , S. Mietke , M. Klinke , T. Podlich , R. Matzdorf , A. A. Stekolnikov , S. Sauer , F. Bechstedt

The low-energy electronic properties of one-dimensional nanowires formed by Pt atoms on Ge(001) are studied with scanning tunneling microscopy down to the millivolt-regime. The chain structure exhibits various dimerized elements at high…

Strongly Correlated Electrons · Physics 2009-11-11 J. Schaefer , D. Schrupp , M. Preisinger , R. Claessen

Tightly confined modes of light, as in optical nanofibers or photonic crystal waveguides, can lead to large optical coupling in atomic systems, which mediates long-range interactions between atoms. These one-dimensional systems can…

Quantum Physics · Physics 2016-12-08 Zachary Eldredge , Pablo Solano , Darrick Chang , Alexey V. Gorshkov

We report on the fabrication and current-voltage (IV) characteristics of very narrow, strip-like arrays of metal nanoparticles. The arrays were formed from gold nanocrystals self-assembled between in-plane electrodes. Local cross-linking of…

Mesoscale and Nanoscale Physics · Physics 2016-08-31 Klara Elteto , Xiao-Min Lin , Heinrich M. Jaeger

The one-dimensional reconstruction of Au/Ge(001) was investigated by means of autocorrelation functions from surface x-ray diffraction (SXRD) and scanning tunneling microscopy (STM). Interatomic distances found in the SXRD-Patterson map are…

Strongly Correlated Electrons · Physics 2013-05-30 S. Meyer , T. Umbach , C. Blumenstein , J. Schäfer , R. Claessen , S. Sauer , S. J. Leake , P. R. Willmott , M. Fiedler , F. Bechstedt

Transistors, regardless of their size, rely on electrical gates to control the conductance between source and drain contacts. In atomic-scale transistors, this conductance is exquisitely sensitive to single electrons hopping via individual…

Using first-principles total-energy pseudopotential calculations, we have studied the properties of chains of potassium and aluminum in nanotubes. For BN tubes, there is little interaction between the metal chains and the tubes, and the…

We report an easy and broadly applicable method for the controlled self-assembly of atomically precise Au32(nBu3P)12Cl8 nanoclusters into micro-crystals. This enables the determination of emergent optoelectronic properties resulting from…

By means of band structure calculations within the density functional theory and the generalized gradient approximation, we investigate the electronic structure of self-organized Pt nanowires on the Ge(001) surface. In particular, we deal…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 U. Schwingenschloegl , C. Schuster

Mn has been found to self-assemble into atomic chains running perpendicular to the surface dimer reconstruction on Si(001). They differ from other atomic chains by a striking asymmetric appearance in filled state scanning tunneling…

Mesoscale and Nanoscale Physics · Physics 2015-12-23 R. Villarreal , M. Longobardi , S. A. Köster , Ch. J. Kirkham , D. Bowler , Ch. Renner

Atomic nanolines are one dimensional systems realized by assembling many atoms on a substrate into long arrays. The electronic properties of the nanolines depend on those of the substrate. Here, we demonstrate that to fully understand the…

Materials Science · Physics 2017-12-20 M. Longobardi , C. J. Kirkham , R. Villarreal , S. A. Koster , D. R. Bowler , Ch. Renner

Materials where the electron filling is close to commensurate filling provide one of the great challenges in materials science. Several proposals of unconventional orderings, where the electronic liquid self-organizes into components with…

The dimensionality of a correlated many-body system has a large impact on its electronic properties. When electrons are confined to one-dimensional chains of atoms their behavior is very different than in higher dimensional systems because…

Water's ability to self-dissociate into H$_3$O$^+$ and OH$^-$ ions is central to acid-base chemistry and bioenergetics. Recent experimental advances have enabled the confinement of water down to the nanometre scale, even to the…

Mesoscale and Nanoscale Physics · Physics 2025-12-23 Chenyu Wang , Wanjian Yin , Ke Zhou

Theoretical treatments of tunneling in electronic devices are often based on one-dimensional (1D) approximations. Here we show that for many nanoscale devices, such as widely studied semiconductor gate-defined quantum dots, 1D…

Mesoscale and Nanoscale Physics · Physics 2014-01-07 Mark Friesen , M. Y. Simmons , M. A. Eriksson

Atomic scale nanowires attract enormous interest in a wide range of fields. On the one hand, due to their quasi-one-dimensional nature, they can act as a experimental testbed for exotic physics: Peierls instability, charge density waves,…

Materials Science · Physics 2014-03-13 Danny E. P. Vanpoucke

The continuing miniaturization of microelectronics raises the prospect of nanometre-scale devices with mechanical and electrical properties that are qualitatively different from those at larger dimensions. The investigation of these…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 A. I. Yanson , G. Rubio Bollinger , H. E. van den Brom , N. Agrait , J. M. van Ruitenbeek

The electronic properties of one-dimensional clusters of N atoms or molecules have been studied. The model used is similar to the Kronig-Penney model with the potential offered by each ion being approximated by an attractive delta function.…

Other Condensed Matter · Physics 2015-06-25 S N Behera , S Gayen , G V Ravi Prasad , S M Bose

We induce superconductivity by proximity effect in thin layers of gold and study the number of conduction channels which contribute to the current in one-atom contacts and atomic wires. The atomic contacts and wires are fabricated with a…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 G. Rubio-Bollinger , C. de las Heras , E. Bascones , N. Agrait , F. Guinea , S. Vieira
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