Now showing items 1-14 of 14

    • Bell solitons in ultra-cold atomic Fermi gas 

      Khan, A.; Panigrahi P.K. (2013)
      We demonstrate the existence of supersonic bell solitons in the Bardeen-Cooper-Schrieffer-Bose-Einstein condensate crossover regime. Starting from the extended Thomas-Fermi density functional theory of superfluid order ...
    • Collective modes in a bilayer dipolar fermi gas and the dissipationless drag effect 

      Tanatar, Bilal (Springer, 2013)
      We consider the collective modes of a bilayer dipolar Fermi system in which the particles interact via long range (∼1/r 3) interaction. Assuming that each layer has a background flow which varies little and that the dynamics ...
    • Dimensional crossover in two-dimensional Bose-Fermi mixtures 

      Subaşi, A. L.; Sevinçli, S.; Vignolo, P.; Tanatar, Bilal (Institute of Physics Publishing, 2010)
      We investigate the equilibrium properties of boson-fermion mixtures consisting of a Bose condensate and spin-polarized Fermi gas confined in a harmonic two-dimensional (2D) trap using mean-field theory. Boson-boson and ...
    • Drag effect in double-layer dipolar fermi gases 

      Tanatar, Bilal; Renklioğlu, Başak; Öktel, M. Özgür (IOP, 2014)
      We consider two parallel layers of two-dimensional spin-polarized dipolar Fermi gas without any tunneling between the layers. The effective interactions describing screening and correlation effects between the dipoles in ...
    • Effect of disorder on the interacting fermi gases in a one-dimensional optical lattice 

      Xianlong, G.; Polini, M.; Tosi, M. P.; Tanatar, Bilal (World Scientific Publishing Co., 2008)
      Interacting two-component Fermi gases loaded in a one-dimensional (1D) lattice and subjected to a harmonic trapping potential exhibit interesting compound phases in which fluid regions coexist with local Mott-insulator ...
    • Excitonic condensation under spin-orbit coupling and BEC-BCS crossover 

      Hakioǧlu T.; Şahin, M. (The American Physical Society, 2007)
      The condensation of electron-hole pairs is studied at zero temperature and in the presence of a weak spin-orbit coupling (SOC) in coupled quantum wells. Under realistic conditions, a perturbative SOC can have observable ...
    • Heat transfer through dipolar coupling: Sympathetic cooling without contact 

      Renklioglu, B.; Tanatar, Bilal; Oktel, M. Ö. (American Physical Society, 2016)
      We consider two parallel layers of dipolar ultracold Fermi gases at different temperatures and calculate the heat transfer between them. The effective interactions describing screening and correlation effects between the ...
    • Impurity coupled to an artificial magnetic field in a Fermi gas in a ring trap 

      Ünal, F. N.; Hetényi, B.; Oktel, M. Ö. (American Physical Society, 2015)
      The dynamics of a single impurity interacting with a many-particle background is one of the central problems of condensed-matter physics. Recent progress in ultracold-atom experiments makes it possible to control this ...
    • Pairing and vortex lattices for interacting fermions in optical lattices with a large magnetic field 

      Zhai, H.; Umucalılar, R. O.; Oktel, M. Ö. (The American Physical Society, 2010)
      We study the structure of a pairing order parameter for spin-1/2 fermions with attractive interactions in a square lattice under a uniform magnetic field. Because the magnetic translation symmetry gives a unique degeneracy ...
    • Pairing of Fermions with Unequal Effective Charges in an Artificial Magnetic Field 

      Ünal, F. N.; Oktel, M. Ö. (American Physical Society, 2016)
      Artificial magnetic fields (AMFs) created for ultracold systems depend sensitively on the internal structure of the atoms. In a mixture, each component experiences a different AMF depending on its internal state. This ...
    • Two-and one-dimensional honeycomb structures of silicon and germanium 

      Cahangirov, S.; Topsakal, M.; Aktürk, E.; Şahin, H.; Çıracı, Salim (American Physical Society, 2009)
      First-principles calculations of structure optimization, phonon modes, and finite temperature molecular dynamics predict that silicon and germanium can have stable, two-dimensional, low-buckled, honeycomb structures. Similar ...
    • Two-dimensional boson-fermion mixtures 

      Subaşi, A.L.; Sevinçli, S.; Vignolo P.; Tanatar, Bilal (2009)
      Using mean-field theory, we study the equilibrium properties of boson-fermion mixtures confined in a harmonic pancake-shaped trap at zero temperature. When the modulus of the s -wave scattering lengths are comparable to ...
    • Two-dimensional boson-fermion mixtures in harmonic traps 

      Tanatar, Bilal; Erdemir, E. (Elsevier Science B.V., 2003)
      The density profiles of bosonic and fermionic components in a system of trapped two-dimensional (2D) boson-fermion (BF) mixture are studied. We employ the variational approach to minimize the total energy functional of the ...
    • Vortices in trapped boson-fermion mixtures 

      Taşgin, M. E.; Subaşi, A. L.; Oktel, M. Ö.; Tanatar, Bilal (Springer, 2005)
      We consider a trapped system of atomic boson-fermion mixture with a quantized vortex. We investigate the density profiles of bosonic and fermionic components as functions of the boson-boson and boson-fermion short-range ...