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| Home > Publications database > Field-induced interplanar magnetic correlations in the high-temperature superconductor La $_{1.88}$ Sr $_{0.12}$ CuO $_{4}$ |
| Home > Publications database > Field-induced interplanar magnetic correlations in the high-temperature superconductor La $_{1.88}$ Sr $_{0.12}$ CuO $_{4}$ |
| Journal Article | FZJ-2015-06665 |
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2015
APS
College Park, Md.
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Please use a persistent id in citations: http://hdl.handle.net/2128/9491 doi:10.1103/PhysRevB.91.174507
Abstract: We present neutron-scattering studies of the interplanar magnetic correlations in the high-temperaturesuperconductor La1.88Sr0.12CuO4 (Tc = 27 K). The correlations are studied both in a magnetic field appliedperpendicular to the CuO2 planes, and in zero field under different cooling conditions. We find that the effectof the magnetic field is to increase the magnetic scattering signal at all values of the out-of-plane wave vectorL, indicating an overall increase of the magnetic moments. In addition, weak correlations between the copperoxide planes develop in the presence of a magnetic field. This effect is not taken into account in previousreports on the field effect of magnetic scattering, since usually only L ≈ 0 is probed. Interestingly, the results ofquench-cooling the sample are similar to those obtained by applying a magnetic field. Finally, a small variationof the incommensurate peak position as a function of L provides evidence that the incommensurate signal istwinned with the magnetic scattering from the dominant and subdominant structural twin displaying peaks ateven and odd values of L, respectively, in our crystal.
Keyword(s): Magnetic Materials (1st) ; Key Technologies (1st) ; Condensed Matter Physics (2nd) ; Magnetism (2nd)
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; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz
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