Akademska digitalna zbirka SLovenije - logo
VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
PDF
  • Two holes in the t-J model form a bound state for any nonzero J/t
    Vidmar, Lev ; Bonča, Janez, 1960-
    Determination of the parameter regime in which two holes in the ▫$t-J$▫ model form a bound state represents a long standing open problem in the field of strongly correlated systems. By applying and ... systematically improving the exact diagonalization method defined over a limited functional space (EDLFS), we show that the average distance between two holes scales as ▫$\langle d \rangle \sim 2(J/t)^{-1/4}$▫ for ▫$J/t < 0.15$▫, therefore, providing strong evidence that two holes in the ▫$t-J$▫ model form the bound state for any nonzero ▫$J/t$▫. However, the symmetry of such bound pair in the ground state is p-wave. This state is consistent with phase separation at finite hole filling, as observed recently in Phys. Rev. B 85, 245113 (2012).
    Vir: Journal of superconductivity and novel magnetism. - ISSN 1557-1939 (Vol. 26, iss. 8, 2013, str. 2641-2645)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2013
    Jezik - angleški
    COBISS.SI-ID - 2548324

    Povezava(-e):

    http://link.springer.com/article/10.1007%2Fs10948-013-2151-2
    DOI

Vnos na polico