Spiral spin-liquid and the emergence of a vortex-like state in MnSc2S4

被引：0

作者：

Gao, Shang ^{[1
,2
]}

Zaharko, Oksana ^{[1
]}

Tsurkan, Vladimir ^{[3
,4
]}

Su, Yixi ^{[5
]}

White, Jonathan S. ^{[1
]}

Tucker, Gregory S. ^{[6
]}

Roessli, Bertrand ^{[1
]}

Bourdarot, Frederic ^{[7
,8
]}

Sibille, Romain ^{[1
,9
]}

Chernyshov, Dmitry ^{[10
]}

Fennell, Tom ^{[1
]}

Loidl, Alois ^{[3
]}

Rueegg, Christian ^{[1
,2
]}

机构：

[1] Paul Scherrer Inst, Lab Neutron Scattering & Imaging, CH-5232 Villigen, Switzerland

[2] Univ Geneva, Dept Quantum Matter Phys, CH-1211 Geneva, Switzerland

[3] Univ Augsburg, Expt Phys 5, D-86135 Augsburg, Germany

[4] Moldavian Acad Sci, Inst Appl Phys, MD-2028 Kishinev, Moldova

[5] Forschungszentrum Julich GmbH, Julich Ctr Neutron Sci JCNS MLZ, Outstn MLZ, D-85747 Garching, Germany

[6] Ecole Polytech Fed Lausanne, Lab Quantum Magnetism, CH-1015 Lausanne, Switzerland

[7] CEA, F-38000 Grenoble, France

[8] Univ Grenoble Alpes, MDN, INAC, MEM, F-38000 Grenoble, France

[9] Paul Scherrer Inst, Lab Sci Dev & Novel Mat, CH-5232 Villigen, Switzerland

[10] Swiss Norwegian Beamlines European Synchrotron Ra, F-38000 Grenoble, France

来源：

NATURE PHYSICS | 2017年 / 13卷 / 02期

基金：

瑞士国家科学基金会;

关键词：

COULOMB PHASE; ORDER; LATTICE; FRUSTRATION; SKYRMIONS; DISORDER;

D O I：

10.1038/NPHYS3914

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Spirals and helices are common motifs of long-range order in magnetic solids, and they may also be organized into more complex emergent structures such as magnetic skyrmions and vortices. A new type of spiral state, the spiral spin-liquid, in which spins fluctuate collectively as spirals, has recently been predicted to exist. Here, using neutron scattering techniques, we experimentally prove the existence of a spiral spin-liquid in MnSc2S4 by directly observing the 'spiral surface' a continuous surface of spiral propagation vectors in reciprocal space. We elucidate the multi-step ordering behaviour of the spiral spin liquid, and discover a vortex-like triple-q phase on application of a magnetic field. Our results prove the effectiveness of the J(1)-J(2) Hamiltonian on the diamond lattice as a model for the spiral spin-liquid state in MnSc2S4, and also demonstrate a new way to realize a magnetic vortex lattice through frustrated interactions.

引用

页码：157 / 161

页数：5