Role of Spinon Excitations on KT Transition at Low Energies in d-Wave Superconductors Conferences uri icon

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abstract

  • By using a low energy effective Lagrangian of the U(1) slave boson mean field theory we examine the vortex binding-unbinding transition (KT transition) from a doped Mott insulator at low temperatures in a d-wave superconductor. It is shown that the interaction potential between vortices is modified by a "Doppler energy shift" resulting in additional attractive interaction, as a consequence of supercurrent fluctuations coupled to the particle-hole excitations of the massless Dirac fermions.

authors

  • Kim, Ki-Seok
  • Seo, Young-Il
  • Eom, Jae-Hyeon
  • Lee, Sung-Sik
  • Eom, Jae-Gon
  • Salk, Sung-Ho Suck

publication date

  • August 10, 2003