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Magnetic vortices instead of stripes: Another interpretation of magnetic neutron scattering in lanthanum cuprates
- Source :
- Physical Review B. 75
- Publication Year :
- 2007
- Publisher :
- American Physical Society (APS), 2007.
-
Abstract
- It is proposed, that a two-dimensional magnetic superstructure closely related to the one mentioned recently by Christensen et al. [cond-mat/0608204] constitutes a viable interpretation of the four-fold splitting of the magnetic (\pi, \pi) peak in lanthanum cuprates. (This splitting is usually interpreted as the evidence for stripes.) The superstructure in question has the topology of the square crystal of magnetic vortices with approximate periodicity (4a x 4a). This vortex crystal exhibits no magnetic antiphase lines. It is shown that such a superstructure is magnetically stable in the approximation of staggered spin polarizations, and that it should be accompanied by charge modulation characterized by charge peaks at the positions observed experimentally.<br />Comment: 4 pages, 2 figures, final version
- Subjects :
- Physics
Strongly Correlated Electrons (cond-mat.str-el)
Condensed matter physics
Condensed Matter - Superconductivity
FOS: Physical sciences
chemistry.chemical_element
Charge (physics)
Neutron scattering
Condensed Matter Physics
Electronic, Optical and Magnetic Materials
Vortex
Superconductivity (cond-mat.supr-con)
Crystal
Condensed Matter - Strongly Correlated Electrons
Condensed Matter::Materials Science
chemistry
Condensed Matter::Superconductivity
Lanthanum
Condensed Matter::Strongly Correlated Electrons
Cuprate
Superstructure (condensed matter)
Spin-½
Subjects
Details
- ISSN :
- 1550235X and 10980121
- Volume :
- 75
- Database :
- OpenAIRE
- Journal :
- Physical Review B
- Accession number :
- edsair.doi.dedup.....a4a8fa32942ab570bbfc8707af5ce2aa