Temperature dependence of the local tunneling conductance in cuprate superconductors with competing antiferromagnetic order

Hong Yi Chen, C. S. Ting

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Based on the t- t′ -U-V model with proper chosen parameters for describing the cuprate superconductors, it is found that near the optimal doping at low temperature (T), only the pure d -wave superconductivity (dSC) prevails and the antiferromagnetic (AF) order is completely suppressed. At higher T, the AF order with stripe modulation and the accompanying charge order may emerge, and they could exist above the dSC transition temperature. We calculate the local differential tunneling conductance (LDTC) from the local density of states (LDOS) and show that their energy variations are rather different from each other as T increases. Although the calculated modulation periodicity in the LDTC/LDOS and bias energy dependence of the Fourier amplitude of LDTC in the "pseudogap" region are in good agreement with the recent scanning tunnel microscope experiment [Vershinin, Science 303, 1995 (2004)], we point out that some of the energy-dependent features in the LDTC do not represent the intrinsic characteristics of the sample.

Original languageEnglish
Article number132505
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number13
DOIs
Publication statusPublished - 2005 Dec 14

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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