Vortex core states in high-Tc superconductors with induced incommensurate spin and charge density waves

Masanori Ichioka, Mitsuaki Takigawa, Kazushige Machida

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

We investigate the change of the vortex structure in the presence of the induced stripe or checkerboard pattern modulation of the incommensurate spin density wave (SDW) and charge density wave (CDW) around the vortex core. The order parameter and the quasiparticle structure in the vortex lattice state are calculated by Bogoliubov-de Gennes theory on a two-dimensional Hubbard model with nearest-neighbor site pairing interaction. By the induced SDW and CDW, low-energy excitations around the vortex core are suppressed, producing "empty core" structure, as observed by the scanning tunneling microscopy. In the relation to these quasiparticle structures, we discuss the site-selective nuclear spin relaxation time T1 and thermal conductivity in the vortex state.

Original languageEnglish
Pages (from-to)28-35
Number of pages8
JournalPhysica C: Superconductivity and its applications
Volume426-431
Issue numberI
DOIs
Publication statusPublished - Oct 1 2005
EventProceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity -
Duration: Nov 23 2004Nov 25 2004

Keywords

  • Bogoliubov-de Gennes theory
  • High-T cuprates
  • Spin and charge density waves
  • Vortex core in superconductors

ASJC Scopus subject areas

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

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