Numerical study of the transition to stripe phases in high-temperature superconductors under a strong magnetic field

Yan Chen; H. Y. Chen; C. S. Ting

Numerical study of the transition to stripe phases in high-temperature superconductors under a strong magnetic field

Yan Chen^*, H. Y. Chen, C. S. Ting

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

The nature of the spin density wave (SDW) and charge density wave (CDW) in the mixed state of high-T_c superconductors (HTS) is investigated by using the self-consistent Bogoliubov-de Gennes equations and an effective model Hamiltonian with competing SDW and d-wave superconductivity interactions. We show that there exists a critical on-site Coulomb interaction U_c. For optimally doped sample, two-dimensional SDW and CDW modulations are induced for U < U_c while SDW and CDW orders become antiferromagnetic (AF) and charge stripes for U > U_c. These stripe orders are stabilized and enhanced near the vortex cores. The wave-lengths of the AF stripes and charge stripes are found respectively to be 8a and 4a, with a as the lattice constant. We show that our results could be applied to understand several recent experiments on HTS.

Original language	English
Article number	104501
Pages (from-to)	1045011-1045015
Number of pages	5
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	66
Issue number	10
Publication status	Published - 2002 Sept 1
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

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abstract = "The nature of the spin density wave (SDW) and charge density wave (CDW) in the mixed state of high-Tc superconductors (HTS) is investigated by using the self-consistent Bogoliubov-de Gennes equations and an effective model Hamiltonian with competing SDW and d-wave superconductivity interactions. We show that there exists a critical on-site Coulomb interaction Uc. For optimally doped sample, two-dimensional SDW and CDW modulations are induced for U < Uc while SDW and CDW orders become antiferromagnetic (AF) and charge stripes for U > Uc. These stripe orders are stabilized and enhanced near the vortex cores. The wave-lengths of the AF stripes and charge stripes are found respectively to be 8a and 4a, with a as the lattice constant. We show that our results could be applied to understand several recent experiments on HTS.",

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AU - Chen, Yan

AU - Chen, H. Y.

AU - Ting, C. S.

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N2 - The nature of the spin density wave (SDW) and charge density wave (CDW) in the mixed state of high-Tc superconductors (HTS) is investigated by using the self-consistent Bogoliubov-de Gennes equations and an effective model Hamiltonian with competing SDW and d-wave superconductivity interactions. We show that there exists a critical on-site Coulomb interaction Uc. For optimally doped sample, two-dimensional SDW and CDW modulations are induced for U < Uc while SDW and CDW orders become antiferromagnetic (AF) and charge stripes for U > Uc. These stripe orders are stabilized and enhanced near the vortex cores. The wave-lengths of the AF stripes and charge stripes are found respectively to be 8a and 4a, with a as the lattice constant. We show that our results could be applied to understand several recent experiments on HTS.

AB - The nature of the spin density wave (SDW) and charge density wave (CDW) in the mixed state of high-Tc superconductors (HTS) is investigated by using the self-consistent Bogoliubov-de Gennes equations and an effective model Hamiltonian with competing SDW and d-wave superconductivity interactions. We show that there exists a critical on-site Coulomb interaction Uc. For optimally doped sample, two-dimensional SDW and CDW modulations are induced for U < Uc while SDW and CDW orders become antiferromagnetic (AF) and charge stripes for U > Uc. These stripe orders are stabilized and enhanced near the vortex cores. The wave-lengths of the AF stripes and charge stripes are found respectively to be 8a and 4a, with a as the lattice constant. We show that our results could be applied to understand several recent experiments on HTS.

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Numerical study of the transition to stripe phases in high-temperature superconductors under a strong magnetic field

Abstract

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