Local electronic structure near oxygen dopants in BSCCO-2212: a window on the high-Tc pair mechanism?
arXiv:cond-mat/0601157 · doi:10.1103/PhysRevLett.96.197002
Abstract
The cuprate material BSCCO-2212 is believed to be doped by a combination of cation switching and excess oxygen. The interstitial oxygen dopants are of particular interest because scanning tunnelling microscopy (STM) experiments have shown that they are positively correlated with the local value of the superconducting gap, and calculations suggest that the fundamental attraction between electrons is modulated locally. In this work, we use density functional theory to try to ascertain which locations in the crystal are energetically most favorable for the O dopant atoms, and how the surrounding cage of atoms deforms. Our results provide support for the identification of STM resonances at -1eV with dopant interstitial O atoms, and show how the local electronic structure is modified nearby.
5 pages, 3 figures
References in corpus (15)
- Angle-resolved photoemission spectroscopy of the cuprate superconductors
- Discovery of microscopic electronic inhomogeneity in the high-Tc superconductor Bi2Sr2CaCu2O8+x
- Imaging the granular structure of high-Tc superconductivity in underdoped Bi2Sr2CaCu2O8+x
- Imaging the Effects of Individual Zinc Impurity Atoms on Superconductivity in Bi2Sr2CaCu2O8+delta
- Effect of chemical inhomogeneity in the bismuth-based copper oxide superconductors
- Inherent Inhomogeneities in Tunneling Spectra of BSCCO Crystals in the Superconducting State
- Impurity-Induced Bound Excitations on the Surface of Bi2Sr2CaCu2O8
- Dopant-modulated pair interaction in cuprate superconductors
- Inhomogeneous d-wave superconducting state of a doped Mott insulator
- Doping induced inhomogeneity in high-Tc superconductors
- Stripe orientation in an anisotropic t-J model
- Ab Initio Calculation of Impurity Effects in Copper Oxide Materials
- Pairing in the spin sector
- Quasiparticle density of states in BiSrCaCuO single crystals probed using tunneling spectroscopy at ultra-low temperatures in high magnetic fields
- Pairbreaking Without Magnetic Impurities in Disordered Superconductors
Cited by in corpus (30)
- A Systematic Study of Electron-Phonon Coupling to Oxygen Modes Across the Cuprates
- Imaging the impact on cuprate superconductivity of varying the inter-atomic distances within individual crystal unit-cells
- Spectroscopic Imaging STM Studies of Electronic Structure in the Superconducting and Pseudogap Phases of Cuprate High-Tc Superconductors
- Inhomogeneity-induced enhancement of the pairing interaction in cuprates
- Electronic Structure of the Cuprate Superconducting and Pseudogap Phases from Spectroscopic Imaging STM
- Self-Organized Networks and Lattice Effects in High Temperature Superconductors
- Two routes to magnetic order by disorder in underdoped cuprates
- Nanoscale interplay of strain and doping in a high-temperature superconductor
- Structure of BSCCO supermodulation from ab initio calculations
- Universal Disorder in Bi2Sr2CaCu2O8+x
- Superconducting gap variations induced by structural supermodulation in BSCCO
- The Impact of an Oxygen Dopant in an ideal Bi-2212 Crystal
- Ab initio description of the BiSrCaCuO electronic structure
- Noisy defects in a doped Mott insulator
- Local modulations of the spin-fluctuation mediated pairing interaction by impurities in d-wave superconductors
- Mesoscopic gap fluctuations in an unconventional superconductor
- Unusual photoemission resonances of oxygen-dopant induced states in BiSrCaCuO
- Atomic manipulation of the gap in BiSrCaCuO
- Disorder and Critical Current Variability in Josephson Junctions
- Modulation of pairing interaction in BiSrCaCuO by an O dopant: a density functional theory study
- Enhanced Pairing Correlations near Oxygen Dopants in Cuprate Superconductors
- Doping Dependence of Gap Inhomogeneities at BiSrCaCuO Surfaces
- Effect of orbital symmetry of the tip on Scanning Tunneling Spectra of BiSrCaCuO
- Bulk and Surface Nanoscale Hole Density Inhomogeneity in HgBaCuO and BiSrCaCuO Cuprates
- Particle-hole symmetry breaking in the pseudogap state of Pb0.55Bi1.5Sr1.6La0.4CuO6+d: A quantum-chemical perspective
- Induced superconductivity in noncuprate layers of the BiSrCaCuO high-temperature superconductor: Modeling of scanning tunneling spectra
- First principle prediction of structural distortions in the cuprates and their impact on the electronic structure
- Signatures of modulated pair interaction in cuprate superconductors
- Gap fluctuations, Cooper pairs with finite center-of-mass momentum, and suppression of superconductivity in inhomogeneous systems with dopant superpuddles agglomerates
- Stripes and Pairing in High Temperature Superconductors