Spatial Distribution of LDOS in Cuprate Superconductors With Magnetic-Field-Induced Stripe Modulation

Abstract

A phenomenological model defined in a two dimensional lattice is employed to investigate the d-wave superconductivity and the competing antiferromagnetic order in cuprate superconductors. Near the optimally doped regime, we show that it is possible to induce the spin density wave (SDW) and the accompanying charge density wave (CDW) orders with stripe modulations by applying a magnetic field. The periods of the magnetic field induced SDW and CDW are $8a$ and $4a$, respectively. The spatial profiles of the local density of states (LDOS) at various bias energies have also been numerically studied. Near and beyond the energies of the vortex core states, we found that the LDOS may display the CDW stripe-like modulation throughout the whole magnetic unit cell. For energies closer to the zero bias, the stripes appear to be rather localized to the vortex. The intensity of the integrated spectrum of the LDOS shows that the strength of the stripe modulation is decaying away from the vortex core. This feature is in good agreement with STM experiments. The case for the magnetic-field induced SDW/CDW with 4-fold symmetry has also been studied.

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Cited by in corpus (10)

• Disorder-Induced Static Antiferromagnetism in Cuprate Superconductors
• Spectral signatures of modulated d-wave superconducting phases
• Antiferromagnetic correlations and impurity broadening of NMR linewidths in cuprate superconductors
• Breakdown of universal transport in correlated d-wave superconductors
• High-Resolution Scanning Tunneling Spectroscopy of Vortex Cores in Inhomogeneous Electronic States of Bi2Sr2CaCu2Ox
• Electronic states near a quantum fluctuating point vortex in a d-wave superconductor: Dirac fermion theory
• Vortex core order and field-driven phase coexistence in the attractive Hubbard model
• Local spin-density-wave order inside vortex cores in multiband superconductors
• Striped morphologies induced by magnetic impurities in d-wave superconductors
• The attractive Hubbard model as an $SO(3)$ system of competing phases: supersolid order and its thermal melting