Tuning2DmagnetisminFe3+XGeTe2filmsbyelementdoping

被引：0

作者：

Shanshan Liu ^{[1
,2
]}

Zihan Li ^{[1
,2
]}

Ke Yang ^{[3
,4
]}

Enze Zhang ^{[1
,2
]}

Awadhesh Narayan ^{[5
]}

Xiaoqian Zhang ^{[6
]}

Jiayi Zhu ^{[7
]}

Wenqing Liu ^{[8
]}

Zhiming Liao ^{[9
,10
]}

Masaki Kudo ^{[11
]}

Takaaki Toriyama ^{[11
]}

Yunkun Yang ^{[1
,2
]}

Qiang Li ^{[1
,2
]}

Linfeng Ai ^{[1
,2
]}

Ce Huang ^{[1
,2
]}

Jiabao Sun ^{[7
]}

Xiaojiao Guo ^{[12
]}

Wenzhong Bao ^{[12
]}

Qingsong Deng ^{[10
]}

Yanhui Chen ^{[10
]}

Lifeng Yin ^{[1
,2
,13
]}

Jian Shen ^{[1
,2
,13
]}

Xiaodong Han ^{[10
]}

Syo Matsumura ^{[11
,14
]}

Jin Zou ^{[9
,15
]}

Yongbing Xu ^{[6
]}

Xiaodong Xu ^{[7
]}

Hua Wu ^{[1
,4
,13
]}

Faxian Xiu ^{[1
,2
,13
,16
]}

机构：

[1] State Key Laboratory of Surface Physics and Department of Physics,Fudan University

[2] Institute for Nanoelectronic Devices and Quantum Computing, Fudan University

[3] College of Science, University of Shanghai for Science and Technology

[4] Laboratory for Computational Physical Sciences(MOE), Fudan University

[5] Solid State and Structural Chemistry Unit, Indian Institute of Science

[6] School of Electronic Science and Engineering, Nanjing University

[7] Department of Physics,University of Washington

[8] Department of Electronic Engineering,Royal Holloway University of London

[9] Materials Engineering,The University of Queensland

[10] Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology

[11] The Ultramicroscopy Research Center,Kyushu University

[12] State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University

[13] Collaborative Innovation Center of Advanced Microstructures

[14] Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University

[15] Centre for Microscopy and Microanalysis, The University of Queensland

[16] Shanghai Research Center for Quantum Sciences

来源：

NationalScienceReview | 2022年 / 9卷 / 06期

关键词：

D O I：

暂无

中图分类号：

O469 [凝聚态物理学]; TB383.2 [];

学科分类号：

070205 ; 080501 ; 1406 ;

摘要：

Two-dimensional（2D） ferromagnetic materials have been discovered with tunable magnetism and orbital-driven nodal-line features. Controlling the 2D magnetism in exfoliated nanoflakes via electric/magnetic fields enables a boosted Curie temperature（TC） or phase transitions. One of the challenges, however, is the realization of high TC2D magnets that are tunable, robust and suitable for large scale fabrication. Here, we report molecular-beam epitaxy growth of wafer-scale Fe3+XGeTe2 films with TC above room temperature. By controlling the Fe composition in Fe3+XGeTe2, a continuously modulated TC in a broad range of 185–320 K has been achieved. This widely tunable TC is attributed to the doped interlayer Fe that provides a 40% enhancement around the optimal composition X = 2. We further fabricated magnetic tunneling junction device arrays that exhibit clear tunneling signals. Our results show an effective and reliable approach, i.e. element doping, to producing robust and tunable ferromagnetism beyond room temperature in a large-scale 2D Fe3+XGeTe2 fashion.

引用

页码：163 / 170

页数：8

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