Magnetic Phase Diagram of Ca2-xSrxRuO4 Governed by Structural Distortions
Preprint
- 10 March 2001
Abstract
We constructed, by the first-principles calculations, a magnetic phase diagram of Sr$_{2}$RuO$_4$ in the space spanned by structural distortions. Our phase diagram can qualitatively explain the experimental one for Ca$_{2-x}$Sr$_x$RuO$_4$. We found that the rotation and the tilting of RuO$_6$ octahedron are responsible for the ferro- and antiferro-magnetism, respectively, while the flattening of RuO$_6$ is the key factor to stabilize those magnetic ground states. Our results imply that the magnetic and the structural instabilities in Sr$_2$RuO$_4$ are closely correlated cooperatively rather than competitively.Keywords
All Related Versions
- Version 1, 2001-03-10, ArXiv
- Published version: Physical Review B, 64 (2), 020509.
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