Synchrotron x-ray-diffraction study of orbital ordering in YVO3

作     者：M. Noguchi A. Nakazawa S. Oka T. Arima Y. Wakabayashi H. Nakao Y. Murakami 

作者机构：Institute of Materials Science University of Tsukuba Tsukuba 305-8573 Japan Photon Factory Institute of Materials Structure Science High Energy Accelerator Research Organization Tsukuba 305-0801 Japan Core Research for Evolutional Science and Technology (CREST) Tsukuba 305-0047 Japan 

出 版 物：《Physical Review B》 (Phys. Rev. B Condens. Matter Mater. Phys.)

年 卷 期：2000年第62卷第14期

页      面：R9271(R)-R9271(R)页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

摘      要：Synchrotron x-ray-diffraction experiments have been carried out in a perovskite-type vanadium oxide YVO3 to elucidate orbital ordering of the system. The change from C- to G-type orbital ordering at the lower magnetic transition temperature was strongly suggested. The long-range orbital ordering appears also in the high-temperature paramagnetic phase. Azimuthal-angle dependence of orbital superlattice reflections indicates that for both orbital-ordering phases the orbital occupation is approximately the dxy1dyz1 and dxy1dzx1 configuration in two sublattices, respectively. These results are in good agreement with a theoretical prediction.