Auflistung nach Schlagwort "Crystal lattices"

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  • Anyon Hubbard Model in One-Dimensional Optical Lattices 
    Greschner, Sebastian; Santos, Luis (College Park, MD : American Physical Society, 2015)
    Raman-assisted hopping may be used to realize the anyon Hubbard model in one-dimensional optical lattices. We propose a feasible scenario that significantly improves the proposal of T. Keilmann et al. [Nat. Commun. 2, 361 ...
  • Density-induced geometric frustration of ultra-cold bosons in optical lattices 
    Mishra, Tapan; Greschner, Sebastian; Santos, Luis (Bristol : Institute of Physics Publishing, 2016)
    A density-dependent gauge field may induce density-induced geometric frustration, leading to a non-trivial interplay between density modulation and frustration, which we illustrate for the particular case of ultra-cold ...
  • Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model 
    Kaczmarczyk, J.; Weimer, Hendrik; Lemeshko, Mikhail (Bristol : Institute of Physics Publishing, 2016)
    The Fermi-Hubbard model is one of the key models of condensed matter physics, which holds a potential for explaining the mystery of high-temperature superconductivity. Recent progress in ultracold atoms in optical lattices ...
  • Engineering interactions and anyon statistics by multicolor lattice-depth modulations 
    Cardarelli, Lorenzo; Greschner, Sebastian; Santos, Luis (College Park, MD : American Physical Society, 2016)
    We show that a multicolor modulation of the depth of an optical lattice allows for a flexible independent control of correlated hopping, occupation-dependent gauge fields, effective on-site interactions without Feshbach ...
  • Exploring unconventional hubbard models with doubly modulated lattice gases 
    Greschner, Sebastian; Santos, Luis; Poletti, D. (College Park, MD : American Physical Society, 2014)
    Recent experiments show that periodic modulations of cold atoms in optical lattices may be used to engineer and explore interesting models. We show that double modulation combining lattice shaking and modulated interactions ...
  • Grazing-incidence X-ray diffraction investigation of the coincidence site lattice of the Ge/Si(001) system 
    Barnscheidt, Yvo; Schmidt, Jan; Osten, H. Jörg (Copenhagen : Munksgaard, 2020)
    The Ge/Si(001) system has been analysed by grazing-incidence X-ray diffraction on a standard laboratory X-ray diffraction tool. A periodic array of interfacial edge dislocations forms a coincidence site lattice (CSL) which ...
  • Symmetry-broken states in a system of interacting bosons on a two-leg ladder with a uniform Abelian gauge field 
    Greschner, Sebastian; Piraud, M.; Heidrich-Meisner, F.; McCulloch, I.P.; Schollwöck, U.; Vekua, T. (College Park, MD : American Physical Society, 2016)
    We study the quantum phases of bosons with repulsive contact interactions on a two-leg ladder in the presence of a uniform Abelian gauge field. The model realizes many interesting states, including Meissner phases, vortex ...
  • Ultracold bosons in zig-zag optical lattices 
    Greschner, Sebastian; Santos, Luis; Vekua, T. (College Park, MD : American Physical Society, 2013)
    Ultracold bosons in zig-zag optical lattices present a rich physics due to the interplay between frustration induced by lattice geometry, two-body interactions, and a three-body constraint. Unconstrained bosons may develop ...
  • Versatile electric fields for the manipulation of ultracold NaK molecules 
    Gempel, M.W.; Hartmann, T.; Schulze, Torben A.; Voges, K.K.; Zenesini, Alessandro; Ospelkaus, Silke (Bristol : Institute of Physics Publishing, 2016)
    In this paper, we present an electrode geometry for the manipulation of ultracold, rovibrational ground state NaK molecules. The electrode system allows to induce a dipole moment in trapped diatomic NaK molecules with a ...