Ferromagnetism stabilized by lattice distortion at the surface of the p-wave superconductor Sr2RuO4

被引：208

作者：

Matzdorf, R ^{[1
]}

Fang, Z

Ismail

Zhang, JD

Kimura, T

Tokura, Y

Terakura, K

Plummer, EW

机构：

[1] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[3] Florida Int Univ, Dept Phys, Miami, FL 33199 USA

[4] Joint Res Ctr Atom Technol, Tsukuba, Ibaraki 3050046, Japan

[5] Univ Tokyo, Dept Appl Phys, Tokyo 1130033, Japan

来源：

SCIENCE | 2000年 / 289卷 / 5480期

关键词：

D O I：

10.1126/science.289.5480.746

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Ferromagnetic (FM) spin fluctuations are believed to mediate the spin-triplet pairing for the rho-wave superconductivity in Sr2RuO4. Our experiments show that, at the surface, a bulk soft-phonon mode freezes into a static Lattice distortion associated with an in-plane rotation of the RuO6 octahedron. First-principle calculations confirm this structure and predict a FM ground state at the surface. This coupling between structure and magnetism in the environment of broken symmetry at the surface allows a reconsideration of the coupling mechanism in the bulk.

引用

页码：746 / 748

页数：3

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