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The laser excitation of an ion crystal to high lying and long-lived electronic states is a genuine many-body process even if in fact only a single ion is excited. This is a direct manifestation of the strong coupling between internal and…

Atomic Physics · Physics 2012-01-16 Weibin Li , Igor Lesanovsky

Interfaces between molecules and 2D materials exhibit energy-driven functionalities, wherein charge transfer directs molecular motion. Unlike equilibrium systems, where molecular assemblies settle into static configurations, continuous…

Vibronic effects in resonant electron transport through single-molecule junctions are analyzed. The study is based on generic models for molecular junctions, which include electronic states on the molecular bridge that are vibrationally…

Mesoscale and Nanoscale Physics · Physics 2011-03-15 R. Härtle , M. Thoss

We study the process of associating molecules from atomic gases using a magnetic field modulation that is resonant with the molecular binding energy. We show that maximal conversion is obtained by optimising the amplitude and frequency of…

Other Condensed Matter · Physics 2007-05-23 Thomas M. Hanna , Thorsten Koehler , Keith Burnett

Photochromic molecular structures constitute a unique platform for constructing molecular switches, sensors and memory devices. One of their most promising applications is as light-switchable electron acceptor or donor units. Here, we…

Chemical Physics · Physics 2020-07-21 Jakub K. Sowa , Emily A. Weiss , Tamar Seideman

Vibrational modes of molecules are fundamental properties determined by intramolecular bonding, atomic masses, and molecular geometry, and often serve as important channels for dissipation in nanoscale processes. Although single-molecule…

Mesoscale and Nanoscale Physics · Physics 2014-03-06 Y. Li , P. Doak , L. Kronik , J. B. Neaton , D. Natelson

Electron-phonon and electron-electron interactions are in competition in determining the properties of molecular charge transfer conductors and superconductors. The direct influence of phonons on the electron-electron interaction was not…

Strongly Correlated Electrons · Physics 2009-10-31 M. Meneghetti

The effect of vibrational motion on resonant charge transport through single molecule junctions is investigated. The study is based on a combination of first-principles electronic structure calculations to characterize the system and…

Other Condensed Matter · Physics 2007-12-24 Claudia Benesch , Martin Cizek , Jiri Klimes , Michael Thoss , Wolfgang Domcke

Molecular communication, as implied by its name, uses molecules as information carriers for communication between objects. It has an advantage over traditional electromagnetic-wave-based communication in that molecule-based systems could be…

Signal Processing · Electrical Eng. & Systems 2023-12-05 Hanlin Xiao , Kamela Dokaj , Ozgur B. Akan

We introduce a model of an active quantum particle and discuss its properties. The particle has a set of internal states that mediate exchanges of heat with external reservoirs. Heat is then converted into motion by means of a spin-orbit…

Mesoscale and Nanoscale Physics · Physics 2026-01-27 Alexander-Georg Penner , Ludmila Viotti , Rosario Fazio , Liliana Arrachea , Felix von Oppen

We investigate electronic transport through two types of conjugated molecules. Mechanically controlled break-junctions are used to couple thiol endgroups of single molecules to two gold electrodes. Current-voltage characteristics (IVs) of…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 J. Reichert , R. Ochs , D. Beckmann , H. B. Weber , M. Mayor , H. v. Loehneysen

We discuss a new mechanism for the electron capture in fast ion-atom collisions. Similarly like in the radiative capture, where the electron transfer occurs due to photon emission, within the mechanism under consideration the electron…

Atomic Physics · Physics 2008-08-06 A. B. Voitkiv , B. Najjari , J. Ullrich

A coherent control scheme for the population distribution in the vibrational states of nonpolar molecules is proposed. Our theoretical analysis and results of numerical simulations for the interaction of the hydrogen molecular ion in its…

Quantum Physics · Physics 2011-02-17 A. Picón , J. Biegert , A. Jaron-Becker , A. Becker

Transfer-ionization in fast collisions between a bare ion and an atom, in which one of the atomic electrons is captured by the ion whereas another one is emitted, crucially depends on dynamic electron-electron correlations. We show that in…

Atomic Physics · Physics 2013-05-15 A. B. Voitkiv

Atoms with a highly excited electron, called Rydberg atoms, can form unusual types of molecular bonds. The bond differs from the well known ionic and covalent bonds not only by its binding mechanism, but also by its bond length ranging up…

Atomic Physics · Physics 2022-05-20 N. Zuber , V. S. V. Anasuri , M. Berngruber , Y. -Q. Zou , F. Meinert , R. Löw , T. Pfau

Experiments have shown that the internal vibrational state of a molecule can affect the intensity of high harmonic light generated from that molecule. This paper presents a model which explains this modulation in terms of interference…

Atomic Physics · Physics 2015-05-13 Zachary B. Walters , Stefano Tonzani , Chris H. Greene

While direct hot-carrier transfer can increase photo-catalytic activity, it is difficult to discern experimentally and competes with several other mechanisms. To shed light on these aspects, here, we model from first principles hot-carrier…

Mesoscale and Nanoscale Physics · Physics 2023-11-20 Jakub Fojt , Tuomas P Rossi , Paul Erhart

Molecular vibrational transitions are prime candidates for model-independent searches for variation of the proton-to-electron mass ratio. Searches for present-day variation achieve highest sensitivity with deep molecular potentials. We…

Atomic Physics · Physics 2016-11-15 D. Hanneke , R. A. Carollo , D. A. Lane

We analyze various limits of vibrationally coupled resonant electron transport in single-molecule junctions. Based on a master equation approach, we discuss analytic and numerical results for junctions under a high bias voltage or weak…

Mesoscale and Nanoscale Physics · Physics 2015-03-18 R. Härtle , M. Thoss

The conversion of an absorbed photon from the exciton energy into the reaction centre in the photosynthetic complex has a near unit efficiency. It is becoming clear that any classical model, where the exciton hopping is modeled by a…

Quantum Physics · Physics 2010-06-21 Vlatko Vedral , Tristan Farrow