Static magnetic correlations near the insulating-superconducting phase boundary in La2−xSrxCuO4
M. Fujita, K. Yamada, H. Hiraka, P. M. Gehring, S. H. Lee, S. Wakimoto, G. Shirane
DOI 10.1103/PhysRevB.65.064505 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
An elastic neutron-scattering study has been performed on several single crystals of La2−xSrxCuO4 for x near a lower critical concentration xc for superconductivity. In the insulating spin-glass phase (x=0.04 and 0.053), the previously reported one-dimensional spin modulation along the orthorhombic b axis is confirmed. Just inside the superconducting phase (x=0.06), however, two pairs of incommensurate magnetic peaks are additionally observed corresponding to the spin modulation parallel to the tetragonal axes. These two types of spin modulations with similar incommensurabilities coexist near the boundary. The peak width κ along the spin-modulation direction exhibits an anomalous maximum in the superconducting phase near xc, where the incommensurability δ increases monotonically upon doping across the phase boundary. These results are discussed in connection with the doping-induced superconducting phase transition.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.3 | Pressure not reported | onset |
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 11.6 | Pressure not reported | onset |
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 17 | Pressure not reported | onset |
Similar papers
Antiferromagnetic spin correlations in insulating, metallic, and superconducting La2−xSrxCuO4
similarity 0.97R. J. Birgeneau et al.
Source status unknown — claims are unverified
Magnetic dynamics of superconducting La1.86Sr0.14CuO4
similarity 0.97T. E. Mason et al.
Source status unknown — claims are unverified
Doping dependence of the spatially modulated dynamical spin correlations and the superconducting-transition temperature in La2−xSrxCuO4
similarity 0.97K. Yamada et al.
Source status unknown — claims are unverified
Low-energy antiferromagnetic spin fluctuations limit the coherent superconducting gap in cuprates
similarity 0.96Yangmu Li et al.
Source status unknown — claims are unverified
Thermal conductivity across the phase diagram of cuprates: Low-energy quasiparticles and doping dependence of the superconducting gap
similarity 0.96Mike Sutherland et al.
Source status unknown — claims are unverified
Tuning competing orders in La2−xSrxCuO4 cuprate superconductors by the application of an external magnetic field
similarity 0.96J. Chang et al.
Source status unknown — claims are unverified