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Direct observation of charge order in underdoped and optimally doped Bi2(Sr,La)2CuO6+δ by resonant inelastic x-ray scattering.
- Source :
-
Physical Review B . Nov2016, Vol. 94 Issue 18, p1-1. 1p. - Publication Year :
- 2016
-
Abstract
- Charge order in underdoped and optimally doped high-Tc superconductors Bi2-x(Sr,La)2CuO6+δ (Bi2201) is investigated by Cu L3 edge resonant inelastic x-ray scattering. We have directly observed charge density modulation in the optimally doped Bi2201 at momentum transfer Q||≃0.23 reciprocal lattice units, with smaller intensity and correlation length with respect to the underdoped sample. This demonstrates the short-range charge order in Bi2201 persists up to optimal doping, as in other hole-doped cuprates. We explored the nodal (diagonal) direction and found no charge order peak, confirming that charge density modulates only along the Cu-O bond directions. We measured the out-of-plane dependence of charge order, finding a flat response and no maxima at half integer L values. This suggests there is no out-of-plane phase correlation in single layer Bi2201, at variance from YBa2Cu3O6+x and La2-x(Ba,Sr)xCuO4. Combining our results with data from the literature we assess that charge order in Bi2201 exists in a large doping range across the phase diagram, i.e., 0.07≲p≲0.16, demonstrating thereby that it is intimately entangled with the antiferromagnetic background, the pseudogap, and superconductivity. [ABSTRACT FROM AUTHOR]
- Subjects :
- *COPPER oxide
*INELASTIC scattering
*SUPERCONDUCTORS
Subjects
Details
- Language :
- English
- ISSN :
- 24699950
- Volume :
- 94
- Issue :
- 18
- Database :
- Academic Search Index
- Journal :
- Physical Review B
- Publication Type :
- Academic Journal
- Accession number :
- 120166664
- Full Text :
- https://doi.org/10.1103/PhysRevB.94.184511