Local density of states near the surface of high-Tc superconductors under magnetic field based on the t-J model

Y. Tanuma, Y. Tanaka, H. Tsuchiura, S. Kashiwaya

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Quasiparticle states near the surface of d-wave superconductors in a magnetic field are studied based on the t-J model on the 2D square lattice within the Gutzwiller approximation. We perform a calculation on the local density of states near the (1 1 0) surface, by changing the hole concentration in the presence of applied magnetic field. In the low-doping region, the zero-energy peak (ZEP) is not sensitive to the applied magnetic field. With the increase of the hole concentration, the ZEP splits into two due to the broken time reversal symmetry state with induced subdominant s-wave like component. Even in this case, the position of split peak is insensitive to the applied magnetic field.

Original languageEnglish
Pages (from-to)147-151
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume367
Issue number1-4
DOIs
Publication statusPublished - 2002 Feb 15
Externally publishedYes

Keywords

  • Broken time-reversal symmetry state
  • Local density of states
  • Magnetic field dependence
  • Zero-bias conductance peak

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Local density of states near the surface of high-T<sub>c</sub> superconductors under magnetic field based on the t-J model'. Together they form a unique fingerprint.

Cite this