Incommensurate magnetic ordering in Sr2Ru1-xTixO4 -: art. no. 197002

被引：79

作者：

Braden, M

Friedt, O

Sidis, Y

Bourges, P

Minakata, M

Maeno, Y

机构：

[1] Forschungszentrum Karlsruhe, IFP, D-76021 Karlsruhe, Germany

[2] CEA, CNRS, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France

[3] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[4] Japan Sci & Technol Corp, CREST, Kawaguchi, Saitama 3320012, Japan

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.88.197002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In Sr2RuO4 the spin excitation spectrum is dominated by incommensurate fluctuations at q=(0.3 0 .3q(z)) , which arise from Fermi-surface nesting. We show that upon Ti substitution, known to suppress superconductivity, a short range magnetic order develops with a propagation vector (0.307 0.307 1). In Sr2Ru0.91Ti0.09O4 , the ordered moment points along the c direction. This finding shows that superconducting Sr2RuO4 is extremely close to an incommensurate spin density wave instability.

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