Theory of Incommensurate Magnetic Correlations Across the Insulator-Superconductor Transition of Underdoped La2−xSrxCuO4
Oleg P. Sushkov, Valeri N. Kotov
DOI 10.1103/PhysRevLett.94.097005 · Physical Review Letters
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Abstract
The main feature in the elastic neutron scattering of La2−xSrxCuO4 is the existence of incommensurate peaks with positions that jump from 45 ° to 0 ° at 5% doping. We show that the spiral state of the t−t′−t′′−J model with realistic parameters describes these data perfectly. We explain why in the insulator the peak is at 45 ° while it switches to 0 ° precisely at the insulator-metal transition. The calculated positions of the peaks are in agreement with the data in both phases.
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. | — | Pressure not reported | unknown |
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