Double-Q ground state with topological charge stripes in the centrosymmetric

被引：32

作者：

Wood, G. D. A. ^{[1
]}

Khalyavin, D. D. ^{[2
]}

Mayoh, D. A. ^{[1
]}

Bouaziz, J. ^{[3
,4
,5
]}

Hall, A. E. ^{[1
]}

Holt, S. J. R. ^{[6
,7
]}

Orlandi, F. ^{[2
]}

Manuel, P. ^{[2
]}

Bluegel, S. ^{[3
,4
,5
]}

Staunton, J. B. ^{[1
]}

Petrenko, O. A. ^{[1
]}

Lees, M. R. ^{[1
]}

Balakrishnan, G. ^{[1
]}

机构：

[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[2] STFC Rutherford Appleton Lab, ISIS Facil, Harwell Sci & Innovat Campus, Didcot OX11 0QX, Oxfon, England

[3] Peter Grunberg Inst, D-52425 Julich, Germany

[4] Forschungszentrum Julich, Inst Adv Simulat, D-52425 Julich, Germany

[5] JARA, D-52425 Julich, Germany

[6] Univ Southampton, Fac Engn & Phys Sci, Southampton SO17 1BJ, Hants, England

[7] Max Planck Inst Struct & Dynam Matter, Luruper Chaussee 149, D-22761 Hamburg, Germany

来源：

PHYSICAL REVIEW B | 2023年 / 107卷 / 18期

基金：

英国工程与自然科学研究理事会; 英国科学技术设施理事会;

关键词：

SKYRMION LATTICE;

D O I：

10.1103/PhysRevB.107.L180402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

GdRu2Si2 is a centrosymmetric magnet in which a skyrmion lattice has recently been discovered. Here, we investigate the magnetic structure of the zero-field ground state using neutron diffraction on single crystal and polycrystalline 160GdRu2Si2. In addition to observing the principal propagation vectors q1 and q2, we discover higher-order magnetic satellites, notably q1 + 2q2. The appearance of these satellites is explained within the framework of a double-Q constant-moment solution. Using powder diffraction, we implement a quantitative refinement of this model. This structure, which contains vortexlike motifs, is shown to have a one-dimensional topological charge density.

引用

页数：5

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