Superconducting gap variations induced by structural supermodulation in BSCCO

Abstract

We discuss the possibility that the strain field introduced by the structural supermodulation in Bi-2212 and certain other cuprate materials may modulate the superconducting pairing interaction. We calculate the amplitude of this effect, visible in scanning tunneling spectroscopy experiments, and thereby relate a change in the local superconducting gap with the change in the local dopant displacements induced by the supermodulation. In principle, since this modulation is periodic, sufficiently accurate x-ray measurements or ab initio calculations should enable one to determine which atomic displacements enhance pairing and therefore T_c.

4 pages, 3 figures

References in corpus (9)

• Scanning tunneling spectroscopy of high-temperature superconductors
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• Imaging the granular structure of high-Tc superconductivity in underdoped Bi2Sr2CaCu2O8+x
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• Inherent Inhomogeneities in Tunneling Spectra of BSCCO Crystals in the Superconducting State
• Dopant-modulated pair interaction in cuprate superconductors
• Fourier transform spectroscopy of d-wave quasiparticles in the presence of atomic scale pairing disorder
• Local electronic structure near oxygen dopants in BSCCO-2212: a window on the high-Tc pair mechanism?
• Thermodynamic transitions in inhomogeneous d-wave superconductors

Cited by in corpus (18)

• Imaging the impact on cuprate superconductivity of varying the inter-atomic distances within individual crystal unit-cells
• Enhancement of the superconducting critical temperature in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ by controlling disorder outside CuO${}_2$ planes
• Two routes to magnetic order by disorder in underdoped cuprates
• Origin of spatial variation of pairing gap in Bi-based high-Tc cuprates
• Structure of BSCCO supermodulation from ab initio calculations
• Nanoscale interplay of strain and doping in a high-temperature superconductor
• Effect of structural supermodulation on superconductivity in tri-layer cuprate Bi2Sr2Ca2Cu3O10+x
• The Impact of an Oxygen Dopant in an ideal Bi-2212 Crystal
• Superstripes and complexity in high-temperature superconductors
• Local modulations of the spin-fluctuation mediated pairing interaction by impurities in d-wave superconductors
• Microscopic Inhomogeneity and Superconducting Properties of a Two-dimensional Hubbard Model for High-$T_c$ Cuprate
• Reconstruction of the Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ Fermi Surface
• Extinction of impurity resonances in large-gap regions of inhomogeneous d-wave superconductors
• Electronic structure of HgBa${}_2$CuO${}_{4+\delta }$ with self-organized interstitial oxygen wires in the Hg spacer planes
• First principle prediction of structural distortions in the cuprates and their impact on the electronic structure
• Interlayer couplings in cuprates: structural origins, analytical forms, and structural estimators
• Modulations of the local pairing interaction near magnetic impurities in d-wave superconductors
• Nodal-antinodal dichotomy from pairing disorder in d-wave superconductors