Imaging Quasiparticle Interference in Bi2Sr2CaCu2O8+δ

By J. Hoffman, K. McElroy, D.-H. Lee, K. Lang, H. Eisaki, S. Uchida, J. C. Davis. Science, 2002

459 citations recorded by the source corpus.

Scanning tunneling spectroscopy of the high-T c superconductor Bi2Sr2CaCu2O8+δreveals weak, incommensurate, spatial modulations in the tunneling conductance. Images of these energy-dependent modulations are Fourier analyzed to yield the dispersion of their wavevectors. Comparison of the dispersions with photoemission spectroscopy data indicates that quasiparticle interference, due to elastic scattering between characteristic regions of momentum-space, provides a consistent explanation for the conductance modulations, without appeal to another order parameter. These results refocus attention on quasiparticle scattering processes as potential explanations for other incommensurate phenomena in the cuprates. The momentum-resolved tunneling spectroscopy demonstrated here also provides a new technique with which to study quasiparticles in correlated materials.

Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/64efa5d07e1fce25c56cfac05ddde247bda51564

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Condensed Matter Physics

1. S. Sachdev
2. A. Georges
3. Gabriel Kotliar
4. R. Hackl
5. J. Hoffman
6. D. Feng
7. T. Devereaux
8. S. Hartnoll

In Electronic, Optical and Magnetic Materials

1. A. Georges
2. S. Sachdev
3. J. Hoffman
4. D. Feng
5. Gabriel Kotliar

Citations in the corpus

• Imaging the two gaps of the high-temperature superconductor Bi 2 Sr 2 CuO 6+ x (2007, background): “quasi-particle interference patterns [43, 44], are impervious to high energy inhomogeneity.”
• Inelastic light scattering from correlated electrons (2006, background): “…2002) and have recently elucidated many issues of nanoscale inhomogeneities in the cuprates and their connection to superconductivity (Fang et al., 2006; Hanaguri et al., 2004; Hoffman et al., 2002; Howald et al., 2003; Kivelson et al., 2003; McElroy et al., 2003, 2005; Vershinin et al., 2004).”
• Crystal-symmetry-paired spin–valley locking in a layered room-temperature metallic altermagnet candidate (2024, unknown): “Due to the C -paired SVL, the spin polarization of these bands has the opposite sign for the adjacent valley, that is, − S z for α ′ and γ ′ and + S z for β ′ surrounding the Y valley.”
• Order and quantum phase transitions in the cuprate superconductors (2002, background): “A number of atomic resolution STM studies of Bi2Sr2CaCu2O8+δ surfaces have appeared recently (Hoffman et al., 2002a,b; Howald et al., 2003, 2002).”
• Plain s-wave superconductivity in single-layer FeSe on SrTiO3 probed by scanning tunnelling microscopy (2015, background): “STM has been shown to be able to provide information on the pairing symmetry by measuring local response of superconductivity to impurities (in-gap impurity states) [20-22] and through quasi-particle interference (QPI) patterns [23-25].”