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

Masanori Ichioka; Mitsuaki Takigawa; Kazushige Machida

doi:10.1016/j.physc.2005.01.016

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

Masanori Ichioka, Mitsuaki Takigawa, Kazushige Machida

Research Institute for Interdisciplinary Science

Research output: Contribution to journal › Conference article › peer-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 language	English
Pages (from-to)	28-35
Number of pages	8
Journal	Physica C: Superconductivity and its applications
Volume	426-431
Issue number	I
DOIs	https://doi.org/10.1016/j.physc.2005.01.016
Publication status	Published - Oct 1 2005
Event	Proceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity - Duration: Nov 23 2004 → Nov 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

Access to Document

10.1016/j.physc.2005.01.016

Cite this

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

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.",

keywords = "Bogoliubov-de Gennes theory, High-T cuprates, Spin and charge density waves, Vortex core in superconductors",

author = "Masanori Ichioka and Mitsuaki Takigawa and Kazushige Machida",

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T1 - Vortex core states in high-Tc superconductors with induced incommensurate spin and charge density waves

AU - Ichioka, Masanori

AU - Takigawa, Mitsuaki

AU - Machida, Kazushige

PY - 2005/10/1

Y1 - 2005/10/1

N2 - 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.

AB - 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.

KW - Bogoliubov-de Gennes theory

KW - High-T cuprates

KW - Spin and charge density waves

KW - Vortex core in superconductors

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