Coupling between spin and orbital degrees of freedom in KCuF3 -: art. no. 106403

被引:81
|
作者
Paolasini, L
Caciuffo, R
Sollier, A
Ghigna, P
Altarelli, M
机构
[1] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[2] Univ Ancona, Dipartimento Fis & Ingn Mat Terr, Ist Nazl Fis Mat, I-60131 Ancona, Italy
[3] Univ Pavia, Dipartimento Chim Fis, I-27100 Pavia, Italy
[4] Sincrotrone Trieste, Trieste, Italy
[5] Abdus Salam Int Ctr Theoret Phys, Trieste, Italy
关键词
D O I
10.1103/PhysRevLett.88.106403
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present the results of resonant x-ray scattering experiments on KCuF3. Structurally forbidden reflections, corresponding to magnetic and 3d-orbital long-range order, have been observed. Integrated intensities have been measured as a function of incident energy, polarization, azimuthal angle, and temperature. The results give evidence for a strong coupling between orbital and spin degrees of freedom. The interplay between magnetic and orbital order parameters is revealed by the temperature dependence of the intensity of orbital Bragg peaks.
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页数:4
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