A Four Unit Cell Periodic Pattern of Quasi-Particle States Surrounding Vortex Cores in Bi2Sr2CaCu2O8+δ
By J. Hoffman, E. Hudson, K. Lang, V. Madhavan, H. Eisaki, S. S. V. U. O. California, Berkeley, Ca, USA. Materials Sciences Division, L. B. N. Laboratory and 3 more. Science, 2002
633 citations recorded by the source corpus.
Scanning tunneling microscopy is used to image the additional quasi-particle states generated by quantized vortices in the high critical temperature superconductor Bi2Sr2CaCu2O8+δ. They exhibit a copper-oxygen bond–oriented “checkerboard” pattern, with four unit cell (4a 0) periodicity and a ∼30 angstrom decay length. These electronic modulations may be related to the magnetic field–induced, 8a 0periodic, spin density modulations with decay length of ∼70 angstroms recently discovered in La1.84Sr0.16CuO4. The proposed explanation is a spin density wave localized surrounding each vortex core. General theoretical principles predict that, in the cuprates, a localized spin modulation of wavelength λ should be associated with a corresponding electronic modulation of wavelength λ/2, in good agreement with our observations.
Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/6c4139f28402f3eea2eadd30fc18a593d224ad3e
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Citations in the corpus
- Doping a Mott insulator: Physics of high-temperature superconductivity (2004, background): “One important outcome is that STM reveals spatial inhomogeneity of the Bi-2212 on roughly 50 to 100 Å length scale, which becomes more and more significant with underdoping.”
- Electrodynamics of high- T c superconductors (2005, methodology): “Coexistence of spin and/or charge modulation with superconductivity in the presence of a magnetic field has been recently detected using a variety of spectroscopic methods Lake et al., 2001; Mitrovic et al., 2001; Hoffman et al., 2002 .”
- 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).”