Neutron scattering studies on spin fluctuations in Sr2RuO4

被引：11

作者：

Jenni, K. ^{[1
]}

Kunkemoeller, S. ^{[1
]}

Steffens, P. ^{[2
]}

Sidis, Y. ^{[3
]}

Bewley, R. ^{[4
]}

Mao, Z. Q. ^{[5
,6
,7
]}

Maeno, Y. ^{[5
]}

Braden, M. ^{[1
]}

机构：

[1] Univ Cologne, Phys Inst 2, Zulpicher Str 77, D-50937 Cologne, Germany

[2] Inst Laue Langevin, 71 Ave Martyrs, F-38000 Grenoble, France

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

[4] Rutherford Appleton Lab, ISIS Neutron & Muon Source, Didcot OX11 0QX, Oxon, England

[5] Kyoto Univ, Dept Phys, Grad Sch Sci, Kyoto 6068502, Japan

[6] Tulane Univ, Dept Phys, New Orleans, LA 70118 USA

[7] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

来源：

PHYSICAL REVIEW B | 2021年 / 103卷 / 10期

关键词：

T-C; SUPERCONDUCTIVITY; TRIPLET; ANTIFERROMAGNETISM; FERROMAGNETISM;

D O I：

10.1103/PhysRevB.103.104511

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic excitations in Sr2RuO4 are studied by polarized and unpolarized neutron scattering experiments as a function of temperature. At the scattering vector of the Fermi-surface nesting with a half-integer out-of-plane component, there is no evidence for the appearance of a resonance excitation in the superconducting phase. The body of existing data indicates weakening of the scattered intensity in the nesting spectrum to occur at very low energies. The nesting signal persists up to 290 K but is strongly reduced. In contrast, a quasiferromagnetic contribution maintains its strength and still exhibits a finite width in momentum space.

引用

页数：10

共 65 条

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