STRUCTURAL EFFECT ON THE STABILITY OF MAGNETIC ORDER IN La1.875Ba0.125-xSrxCuO4

Authors performed neutron scattering and mSR measurements on La1.875Ba0.125-xSrxCuO4 in order to investigate the structural effect on the stability of magnetic order. Onset temperature of magnetic order seen by mSR measurement is lower than that by neutron scattering and shows an anomalous reduction...

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Veröffentlicht in:Physica. C, Superconductivity Superconductivity, 2002-10, Vol.378-381, p.390-394
Hauptverfasser: Goka, H, Kubo, K, Uefuji, T, Fujita, M, Yamada, K, Matsuda, M
Format: Artikel
Sprache:eng
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Zusammenfassung:Authors performed neutron scattering and mSR measurements on La1.875Ba0.125-xSrxCuO4 in order to investigate the structural effect on the stability of magnetic order. Onset temperature of magnetic order seen by mSR measurement is lower than that by neutron scattering and shows an anomalous reduction at the structural phase boundary from low-temperature less-orthorhombic structure with Pccn symmetry to low-temperature orthorhombic phase upon increasing x. On the other hand, ordering temperature as a function of x obtained by neutron scattering changes continuously irrespective of the crystal structure. Results suggest difference of dynamical nature of Cu spins between these crystal structures. 14 refs.
ISSN:0921-4534
DOI:10.1016/S0921-4534(02)01452-1