Evidence for an incommensurate magnetic resonance inLa2−xSrxCuO4
| Autor: | Kohta Yamada, H. M. Ronnow, L. P. Regnault, Y. S. Lee, John M. Tranquada, C. H. Lee |
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| Rok vydání: | 2004 |
| Předmět: |
Superconductivity
Physics High-temperature superconductivity Condensed matter physics Inelastic scattering Condensed Matter Physics Magnetic susceptibility Inelastic neutron scattering Electronic Optical and Magnetic Materials law.invention Magnetic field law Condensed Matter::Superconductivity Condensed Matter::Strongly Correlated Electrons Cuprate Coherence (physics) |
| Zdroj: | Physical Review B. 69 |
| ISSN: | 1550-235X 1098-0121 |
| DOI: | 10.1103/physrevb.69.174507 |
| Popis: | We study the effect of a magnetic field (applied along the c axis) on the low-energy, incommensurate magnetic fluctuations in superconducting La1.82Sr0.18CuO4. The incommensurate peaks at 9 meV, which in zero field were previously shown to sharpen in q on cooling below T-c [T. E. Mason , Phys. Rev. Lett. 77, 1604 (1996)], are found to broaden in q when a field of 10 T is applied. The applied field also causes scattered intensity to shift into the spin gap. We point out that the response at 9 meV, though occurring at incommensurate wave vectors, is comparable to the commensurate magnetic resonance observed at higher energies in other cuprate superconductors. |
| Databáze: | OpenAIRE |
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