Interplay between the magnetic fluctuations and superconductivity in lanthanum cuprates |
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| Authors: | G. B. Teitel’baum V. E. Kataev E. L. Vavilova P. L. Kuhns A. P. Reyes W. G. Moulton |
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| Affiliation: | (1) Zavoiskii Institute for Technical Physics, Russian Academy of Sciences, Kazan, 420029 Tatarstan, Russia;(2) NHMFL, Tallahassee, FL 32310, USA |
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| Abstract: | We report an analysis of the magnetic fluctuations in superconducting La2?xSrxCuO4 and related lanthanum cuprates that have different symmetry of the low-temperature structure. NMR and ESR investigations revealed a dynamical coexistence of superconductivity and the antiferromagnetic correlations in most of the superconductivity region of the phase diagram. We show that, for all compounds, regardless of their low-temperature symmetry and their superconducting properties, the enhancement of the spin stiffness near 1/8 doping takes place. |
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