Large-scale epitaxy of two-dimensional van der Waals room-temperature ferromagnet Fe5GeTe2

被引：63

作者：

Ribeiro, Mario ^{[1
]}

Gentile, Giulio ^{[1
]}

Marty, Alain ^{[1
]}

Dosenovic, Djordje ^{[2
]}

Okuno, Hanako ^{[2
]}

Vergnaud, Celine ^{[1
]}

Jacquot, Jean-Francois ^{[3
]}

Jalabert, Denis ^{[2
]}

Longo, Danilo ^{[4
]}

Ohresser, Philippe ^{[4
]}

Hallal, Ali ^{[1
]}

Chshiev, Mairbek ^{[1
,5
]}

Boulle, Olivier ^{[1
]}

Bonell, Frederic ^{[1
]}

Jamet, Matthieu ^{[1
]}

机构：

[1] Univ Grenoble Alpes, CNRS, CEA, IRIG Spintec, F-38000 Grenoble, France

[2] Univ Grenoble Alpes, CEA, IRIG MEM, F-38000 Grenoble, France

[3] Univ Grenoble Alpes, CEA, IRIG SYMMES, F-38000 Grenoble, France

[4] Synchrotron SOLEIL, F-91192 Gif Sur Yvette, France

[5] Inst Univ France IUF, F-75231 Paris, France

来源：

NPJ 2D MATERIALS AND APPLICATIONS | 2022年 / 6卷 / 01期

关键词：

TOTAL-ENERGY CALCULATIONS; CRYSTAL; MORPHOLOGY; FE3GETE2;

D O I：

10.1038/s41699-022-00285-w

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In recent years, two-dimensional van der Waals materials have emerged as an important platform for the observation of long-range ferromagnetic order in atomically thin layers. Although heterostructures of such materials can be conceived to harness and couple a wide range of magneto-optical and magneto-electrical properties, technologically relevant applications require Curie temperatures at or above room temperature and the ability to grow films over large areas. Here we demonstrate the large-area growth of single-crystal ultrathin films of stoichiometric Fe5GeTe2 on an insulating substrate using molecular beam epitaxy. Magnetic measurements show the persistence of soft ferromagnetism up to room temperature in 12 nm-thick films, with a Curie temperature of 293 K, and a weak out-of-plane magnetocrystalline anisotropy. The ferromagnetic order is preserved in bilayer Fe5GeTe2, with Curie temperature decreasing to 229 K. Surface, chemical, and structural characterizations confirm the layer-by-layer growth, 5:1:2 Fe:Ge:Te stoichiometric elementary composition, and single-crystalline character of the films.

引用

页数：9

共 52 条

[11] Two-dimensional itinerant ferromagnetism in atomically thin Fe3GeTe2 [J].

Fei, Zaiyao ;

Huang, Bevin ;

Malinowski, Paul ;

Wang, Wenbo ;

Song, Tiancheng ;

Sanchez, Joshua ;

Yao, Wang ;

Xiao, Di ;

Zhu, Xiaoyang ;

May, Andrew F. ;

Wu, Weida ;

Cobden, David H. ;

Chu, Jiun-Haw ;

Xu, Xiaodong .

NATURE MATERIALS, 2018, 17 (09) :778-+

[12] Ferromagnetism in layered metastable 1T-CrTe2 [J].

Freitas, Daniele C. ;

Weht, Ruben ;

Sulpice, Andre ;

Remenyi, Gyorgy ;

Strobel, Pierre ;

Gay, Frederic ;

Marcus, Jacques ;

Nunez-Regueiro, Manuel .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2015, 27 (17)

[13] Discovery of intrinsic ferromagnetism in two-dimensional van der Waals crystals [J].

Gong, Cheng ;

Li, Lin ;

Li, Zhenglu ;

Ji, Huiwen ;

Stern, Alex ;

Xia, Yang ;

Cao, Ting ;

Bao, Wei ;

Wang, Chenzhe ;

Wang, Yuan ;

Qiu, Z. Q. ;

Cava, R. J. ;

Louie, Steven G. ;

Xia, Jing ;

Zhang, Xiang .

NATURE, 2017, 546 (7657) :265-+

[14] Magnetotransport in Bi2Se3 thin films epitaxially grown on Ge(111) [J].

Guillet, T. ;

Marty, A. ;

Beigne, C. ;

Vergnaud, C. ;

Dau, M. -T. ;

Noel, P. ;

Frigerio, J. ;

Isella, G. ;

Jamet, M. .

AIP ADVANCES, 2018, 8 (11)

[15] Layer-dependent ferromagnetism in a van der Waals crystal down to the monolayer limit [J].

Huang, Bevin ;

Clark, Genevieve ;

Navarro-Moratalla, Efren ;

Klein, Dahlia R. ;

Cheng, Ran ;

Seyler, Kyle L. ;

Zhong, Ding ;

Schmidgall, Emma ;

McGuire, Michael A. ;

Cobden, David H. ;

Yao, Wang ;

Xiao, Di ;

Jarillo-Herrero, Pablo ;

Xu, Xiaodong .

NATURE, 2017, 546 (7657) :270-+

[16]

Joe M., 2019, N MAT SCI, V1, P299, DOI [10.1016/j.nanoms.2019.09.009, DOI 10.1016/J.NANOMS.2019.09.009]

[17] Fast continuous energy scan with dynamic coupling of the monochromator and undulator at the DEIMOS beamline [J].

Joly, L. ;

Otero, E. ;

Choueikani, F. ;

Marteau, F. ;

Chapuis, L. ;

Ohresser, P. .

JOURNAL OF SYNCHROTRON RADIATION, 2014, 21 :502-506

[18] Large anomalous Hall current induced by topological nodal lines in a ferromagnetic van der Waals semimetal [J].

Kim, Kyoo ;

Seo, Junho ;

Lee, Eunwoo ;

Ko, K. -T. ;

Kim, B. S. ;

Jang, Bo Gyu ;

Ok, Jong Mok ;

Lee, Jinwon ;

Jo, Youn Jung ;

Kang, Woun ;

Shim, Ji Hoon ;

Kim, C. ;

Yeom, Han Woong ;

Min, Byung Il ;

Yang, Bohm-Jung ;

Kim, Jun Sung .

NATURE MATERIALS, 2018, 17 (09) :794-+

[19] Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set [J].

Kresse, G ;

Furthmuller, J .

PHYSICAL REVIEW B, 1996, 54 (16) :11169-11186

[20] From ultrasoft pseudopotentials to the projector augmented-wave method [J].

Kresse, G ;

Joubert, D .

PHYSICAL REVIEW B, 1999, 59 (03) :1758-1775

← 1 2 3 4 5 6 →