2003/12/31 by R. Mathieu, A. Asamitsu, Hiroyuki Yamada +9
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.93.016602
published as Phys. Rev. Lett. 93, 016602 (2004) · REVTeX 4 style; 5 pages, 3 figures; revised 23/2 and accepted for publication
arxiv created 2004/05/10 · openalex publication_date 2004/06/29 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
The anomalous Hall effect (AHE) of ferromagnetic thin films of Sr_1\ensuremath-xCaxRuO3 (0\ensuremath≤x\ensuremath≤0.4) is studied as a function of x and temperature T. As x increases, both the transition temperature Tc and the magnetization M are reduced and vanish near x\ensuremath∼ 0.7. For all compositions, the transverse resistivity \ensuremathρH varies nonmonotonously with T, and even changes sign, thus violating the conventional expression \ensuremathρH=RoB+4\ensuremathπRsM(T) (B is the magnetic induction, while Ro and Rs are the ordinary and anomalous Hall coefficients). From the rather complicated data of \ensuremathρH, we find a scaling behavior of the transverse conductivity \ensuremathσxy with M(T), which is well reproduced by the first-principles band calculation assuming the intrinsic origin of the AHE.