Role of spinon and spinon singlet pair excitations on phase transitions in $d-wave$ superconductors

Details Role of spinon and spinon singlet pair excitations on phase transitions in $d-wave$ superconductors Role of spinon and spinon singlet pair excitations on phase transitions in $d-wave$ superconductors

2003-05-16

arxiv.org/abs/cond-mat/0305385v1

Phys. Rev. B 69, 014504 (2004)

Physics

Condensed Matter

Superconductivity

5 pages, 1 figure

Scientific paper

10.1103/PhysRevB.69.014504

We examine the roles of massless Dirac spinon and spin singlet pair excitations on the phase transition in $d-wave$ superconductors. Although the massless spinon excitations in the presence of the spin singlet pair excitations do not alter the nature of the phase transition at $T = 0$, that is, the XY universality class, they are seen to induce an additional attractive interaction potential between vortices, further stabilizing vortex-antivortex pairs at low temperature for lightly doped high $T_c$ samples.

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