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An increasingly large variety of molecular species are being cooled down to low energies in recent years, and innovative ideas and powerful techniques continue to emerge to gain ever more precise control of molecular motion. In this brief…

量子气体 · 物理学 2024-05-24 Tim Langen , Giacomo Valtolina , Dajun Wang , Jun Ye

We insert and manipulate a single chlorine atom in chlorine monolayer on a Si(100)-2x1 surface using a scanning tunneling microscope. Two objects were created - a Cl atom in a groove between two dimer rows, and bridge-bonded Cl on a silicon…

介观与纳米尺度物理 · 物理学 2020-07-03 T. V. Pavlova , V. M. Shevlyuga , B. V. Andryushechkin , K. N. Eltsov

We report on a method to fabricate and measure gateable molecular junctions which are stable at room temperature. The devices are made by depositing molecules inside a few-layer graphene nanogap, formed by feedback controlled…

We investigate the plasma enhancement of nuclear reactions in the intermediate coupling regime using orbital free molecular dynamics (OFMD) simulations. Mixtures of H-Cu and H-Ag serve as prototypes of simultaneous weak and strong couplings…

Atom-light interactions in nano-scale systems hold great promise for novel technologies based on integrated emitters and optical modes. We present the design architecture, construction method, and characterization of an all-glass…

We discuss techniques to generate long-range interactions in a gas of groundstate alkali atoms, by weakly admixing excited Rydberg states with laser light. This provides a tool to engineer strongly correlated phases with reduced decoherence…

量子气体 · 物理学 2015-05-14 G. Pupillo , A. Micheli , M. Boninsegni , I. Lesanovsky , P. Zoller

We consider cold polar molecules confined in a helical optical lattice similar to those used in holographic microfabrication. An external electric field polarizes molecules along the axis of the helix. The large-distance inter-molecular…

其他凝聚态物理 · 物理学 2009-11-13 K. T. Law , D. E. Feldman

Graphite intercalation compounds (GICs) have a variety of functions due to their rich material variations, and thus,innovative methods for their synthesis are desired for practical applications. We have discovered that Na has a catalytic…

材料科学 · 物理学 2023-03-28 Akira Iyo , Hiraku Ogino , Shigeyuki Ishida , Hiroshi Eisaki

The transversely confined propagating light modes of a nano-photonic optical waveguide or nanofiber can mediate effectively infinite-range forces. We show that for a linear chain of particles trapped within the waveguide's evanescent field,…

量子物理 · 物理学 2021-05-10 Daniela Holzmann , Matthias Sonnleitner , Helmut Ritsch

Laser cooled ions trapped in a linear Paul trap are long-standing ideal candidates for realizing quantum simulation, especially of many-body systems. The properties that contribute to this also provide the opportunity to demonstrate…

量子物理 · 物理学 2022-03-04 Pradip Laha , Lukáš Slodička , Darren W. Moore , Radim Filip

We discuss laser dressed dipolar and Van der Waals interactions between atoms and polar molecules, so that a cold atomic gas with laser admixed Rydberg levels acts as a designed reservoir for both elastic and inelastic collisional…

原子物理 · 物理学 2012-05-15 Bo Zhao , Alexander Glätzle , Guido Pupillo , Peter Zoller

Supramolecular assemblies have gained tremendous attention due to their apparent ability to catalyze reactions with the efficiencies of natural enzymes. Using Born-Oppenheimer molecular dynamics and density functional theory, we identify…

化学物理 · 物理学 2019-12-06 Valerie Vaissier Welborn , Wan-Lu Li , Teresa Head-Gordon

Current experimental and theoretical studies on the effect of intermolecular interactions on molecular conduction appear to be in conflict with each other. In particular, some experimental results, e.g., the observation of 2-dimensional…

介观与纳米尺度物理 · 物理学 2007-07-23 A. Landau , L. Kronik , A. Nitzan

Since the advent of atom laser-cooling, trapping or cooling natural molecules has been a long standing and challenging goal. Here, we demonstrate a method for laser-trapping molecules that is radically novel in its configuration, in its…

光学 · 物理学 2015-06-04 M. Alharbi , A. Husakou , B. Debord , F. Gerome , F. Benabid

In this work we present a molecular dynamics investigation of thermal transport in a silica-gallium nitride nanocomposite. A surprising enhancement of the thermal conductivity for crystalline volume fractions larger than 5% is found, which…

We present a cooling method for a strongly-interacting trapped quantum gas. By applying a magnetic field modulation with frequencies close to the binding energy of a molecular bound state we selectively remove dimers with high kinetic…

量子气体 · 物理学 2024-10-15 Daniel Eberz , Andreas Kell , Moritz Breyer , Michael Köhl

The analogue of Overhauser (particle-hole) pairing in electronic systems (spin-density waves with non-zero total momentum $Q$) is analyzed in finite-density QCD for 3 colors and 2 flavors, and compared to the color-superconducting BCS…

高能物理 - 唯象学 · 物理学 2009-10-31 R. Rapp , E. Shuryak , I. Zahed

Using density functional theory calculations, we have investigated the structural, energetic, and electronic properties of ternary graphite intercalation compounds (GICs) containing alkali atoms (AM) and normal alkylamine molecules (nC$x$),…

材料科学 · 物理学 2017-09-20 Gum-Chol Ri , Chol-Jun Yu , Jin-Song Kim , Song-Nam Hong , Un-Gi Jong , Mun-Hyok Ri

Based on ab initio calculations, we study the effect of intercalating twisted bilayer graphene with carbon. Surprisingly, we find that the intercalant pulls the atoms in the two layers closer together locally when placed in certain regions…

材料科学 · 物理学 2017-08-30 Anindya Roy , Hridis K. Pal

Metals which can form intermetallic compounds by an exothermic reaction constitute a class of reactive materials with multiple applications. Ni-Al laminates of thin alternating layers are being considered as model nanometric metallic…

材料科学 · 物理学 2015-06-17 Luis Sandoval , Geoffrey H. Campbell , Jaime Marian