Now showing items 1-4 of 4

    • Generalized Aubry-Andre-Harper model with modulated hopping and p-wave pairing 

      Yahyavi, Mohammad; Hetenyi, Balazs; Tanatar, Bilal (American Physical Society, 2019)
      We study an extended Aubry-André-Harper model with simultaneous modulation of hopping on-site potential and p-wave superconducting pairing. For the case of commensurate modulation of β=1/2 it is shown that the model hosts ...
    • Local entanglement and string order parameter in dimerized models 

      Bahovadinov, Murod S; Gülseren, Oğuz; Schnack, J. (IOP, 2019-09)
      In this letter, we propose an application of string order parameter (SOP), commonly used in quantum spin systems, to identify symmetry-protected topological phase (SPT) in fermionic systems in the example of the dimerized ...
    • Quantum phase transitions from analysis of the polarization amplitude 

      Hetenyi, Balazs; Dora, B. (American Physical Society, 2019)
      In the modern theory of polarization, polarization itself is given by a geometric phase. In calculations for interacting systems the polarization and its variance are obtained from the polarization amplitude. We interpret ...
    • Topological aspects of charge transport in quantum many-body systems 

      Yahyavi, Mohammad (Bilkent University, 2019-02)
      Motivated by the recent proposals and developments of topological insulators and topological superconductors for their potential applications in electronic devices and quantum computing, we have theoretically studied ...