Competition between Charge- and Spin-Density-Wave Order and Superconductivity in La1.875Ba0.125−xSrxCuO4
M. Fujita, H. Goka, K. Yamada, M. Matsuda
DOI 10.1103/PhysRevLett.88.167008 · Physical Review Letters
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Abstract
We have performed a series of elastic neutron scattering measurements on 1/8-hole doped La1.875−Ba0.125−xSrxCuO4 single crystals with x=0.05, 0.06, 0.075, and 0.085. Both charge-density-wave (CDW) and spin-density-wave orders are found to develop simultaneously below the structural transition temperature between the low-temperature orthorhombic (LTO) and low-temperature tetragonal (LTT) or low-temperature less-orthorhombic (LTLO) phases. In the ground state the CDW order is observed only in the LTT/LTLO phase and drastically degrades towards the LTO boundary. The x dependence of Tc strongly suggests a direct effect of the CDW order on the suppression of superconductivity.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La1.875Ba0.075Sr0.05CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La1.88Sr0.12CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 31.5 | Pressure not reported | unknown |
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