Skyrmion phase and competing magnetic orders on a breathing kagome lattice

被引：257

作者：

Hirschberger, Max ^{[1
]}

Nakajima, Taro ^{[1
,9
]}

Gao, Shang ^{[1
]}

Peng, Licong ^{[1
]}

Kikkawa, Akiko ^{[1
]}

Kurumaji, Takashi ^{[1
,10
]}

Kriener, Markus ^{[1
]}

Yamasaki, Yuichi ^{[2
,3
]}

Sagayama, Hajime ^{[4
]}

Nakao, Hironori ^{[4
]}

Ohishi, Kazuki ^{[5
]}

Kakurai, Kazuhisa ^{[1
,5
]}

Taguchi, Yasujiro ^{[1
]}

Yu, Xiuzhen ^{[1
]}

Arima, Taka-hisa ^{[1
,6
]}

Tokura, Yoshinori ^{[1
,7
,8
]}

机构：

[1] RIKEN Ctr Emergent Matter Sci CEMS, Wako, Saitama 3510198, Japan

[2] Natl Inst Mat Sci NIMS, Res & Serv Div Mat Data & Integrated Syst MaDIS, Tsukuba, Ibaraki 3050047, Japan

[3] Japan Sci & Technol Agcy JST, PRESTO, Kawaguchi, Saitama 3320012, Japan

[4] High Energy Accelerator Res Org, Inst Mat Struct Sci, Tsukuba, Ibaraki 3050801, Japan

[5] Comprehens Res Org Sci & Soc CROSS, Neutron Sci & Technol Ctr, Tokai, Ibaraki 3191106, Japan

[6] Univ Tokyo, Dept Adv Mat Sci, Kashiwa, Chiba 2778561, Japan

[7] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

[8] Univ Tokyo, Tokyo Coll, Bunkyo Ku, Tokyo 1138656, Japan

[9] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

[10] MIT, Dept Phys, Cambridge, MA 02139 USA

来源：

NATURE COMMUNICATIONS | 2019年 / 10卷 / 1期

关键词：

TRANSITIONS; GD3RU4AL12;

D O I：

10.1038/s41467-019-13675-4

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：

Magnetic skyrmion textures are realized mainly in non-centrosymmetric, e.g. chiral or polar, magnets. Extending the field to centrosymmetric bulk materials is a rewarding challenge, where the released helicity/vorticity degree of freedom and higher skyrmion density result in intriguing new properties and enhanced functionality. We report here on the experimental observation of a skyrmion lattice (SkL) phase with large topological Hall effect and an incommensurate helical pitch as small as 2.8 nm in metallic Gd3Ru4Al12, which materializes a breathing kagome lattice of Gadolinium moments. The magnetic structure of several ordered phases, including the SkL, is determined by resonant x-ray diffraction as well as small angle neutron scattering. The SkL and helical phases are also observed directly using Lorentz-transmission electron microscopy. Among several competing phases, the SkL is promoted over a low-temperature transverse conical state by thermal fluctuations in an intermediate range of magnetic fields.

引用

页数：9

共 36 条

[1] Magnetic behavior of Gd3Ru4Al12, a layered compound with distorted kagome net
Chandragiri, Venkatesh
Iyer, Kartik K.
Sampathkumaran, E. V.
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2016, 28 (28)
[2] Paths to annihilation of first- and second-order (anti)skyrmions via (anti)meron nucleation on the frustrated square lattice
Desplat, L.
Kim, J-, V
Stamps, R. L.
[J]. PHYSICAL REVIEW B, 2019, 99 (17)
[3] Gao S, 2017, NAT PHYS, V13, P157, DOI [10.1038/nphys3914, 10.1038/NPHYS3914]
[4] PHASE-TRANSITIONS WITH SPONTANEOUS MODULATION THE DIPOLAR ISING FERROMAGNET
GAREL, T
DONIACH, S
[J]. PHYSICAL REVIEW B, 1982, 26 (01): : 325 - 329
[5] STRUCTURE OF GD3RU4AL12, A NEW MEMBER OF THE EUMG5.2 STRUCTURE FAMILY WITH MINORITY-ATOM CLUSTERS
GLADYSHEVSKII, RE
STRUSIEVICZ, OR
CENZUAL, K
PARTHE, E
[J]. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1993, 49 : 474 - 478
[6] Effective bilinear-biquadratic model for noncoplanar ordering in itinerant magnets
Hayami, Satoru
Ozawa, Ryo
Motome, Yukitoshi
[J]. PHYSICAL REVIEW B, 2017, 95 (22)
[7] Bubble and skyrmion crystals in frustrated magnets with easy-axis anisotropy
Hayami, Satoru
Lin, Shi-Zeng
Batista, Cristian D.
[J]. PHYSICAL REVIEW B, 2016, 93 (18)
[8] Multiple-Q instability by (d-2)-dimensional connections of Fermi surfaces
Hayami, Satoru
Motome, Yukitoshi
[J]. PHYSICAL REVIEW B, 2014, 90 (06)
[9] Heinze S, 2011, NAT PHYS, V7, P713, DOI [10.1038/nphys2045, 10.1038/NPHYS2045]
[10] Resonant Magnetic X-ray Diffraction Study on the Triangular Lattice Antiferromagnet GdPd2Al3
Inami, Toshiya
Terada, Noriki
Kitazawa, Hideaki
Sakai, Osamu
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2009, 78 (08)

← 1 2 3 4 →