Deisenhofer J, Braak D, Krug von Nidda H-A, Hemberger J, Eremina R M, Ivanshin V A, Balbashov A M, Jug G, Loidl A, Kimura T, Tokura Y
EP V, Center for Electronic Correlations and Magnetism, University of Augsburg, 86135 Augsburg, Germany.
Phys Rev Lett. 2005 Dec 16;95(25):257202. doi: 10.1103/PhysRevLett.95.257202. Epub 2005 Dec 12.
We report on the discovery of a novel triangular phase regime in the system La1-xSrxMnO3 by means of electron spin resonance and magnetic susceptibility measurements. This phase is characterized by the coexistence of ferromagnetic entities within the globally paramagnetic phase far above the magnetic ordering temperature. The nature of this phase can be understood in terms of Griffiths singularities arising due to the presence of correlated quenched disorder in the orthorhombic phase.
我们通过电子自旋共振和磁化率测量报告了在La1-xSrxMnO3系统中发现的一种新型三角相区。该相的特征是在远高于磁有序温度的全局顺磁相中存在铁磁实体。这个相的性质可以根据正交相中相关淬火无序的存在所产生的格里菲斯奇点来理解。
