Probing the atomic-scale ferromagnetism in van der Waals magnet CrSiTe3

Niu，Wei1; Zhang，Xiaoqian2,3; Wang，Wei4; Sun，Jiabao5; Xu，Yongbing1,3; He，Liang3; Liu，Wenqing5; Pu，Yong1

2021-10-25

10.1063/5.0069885

APPLIED PHYSICS LETTERS   影响因子和分区

0003-6951

1077-3118

As an emerging class of two-dimensional (2D) materials, van der Waals (vdW) magnets have attracted a lot of research attention since they can give access to fundamental physics and potential spintronic device applications. Among these 2D vdW magnets, CrSiTe3, as an intrinsic ferromagnetic semiconductor, exhibits great potentials in low-dimensional spintronics. Of particular interest in this 2D vdW magnet is the electronic and magnetic properties at the atomic-scale, which has yet been fully explored so far. Here, combing angle-resolved photoemission spectroscopy, bulk magnetic measurements, and synchrotron-based x-ray techniques, an unambiguous picture of the electronic and magnetic states of CrSiTe3 is presented. Hybridization of Cr-3d and Te-5p orbitals and the semiconducting behavior are confirmed by the band structure detection. Intrinsic ferromagnetism with a magnetic anisotropy constant of 1.56 × 105 erg/cm3 is attributed to the superexchange interaction of the Cr3+ ions. In addition, temperature-dependent spin and orbital moments are determined, and a fitted critical exponent of 0.169 implies that CrSiTe3 is in good agreement with the 2D Ising model. More remarkably, unquenched orbital moments are experimentally evidenced, bringing CrSiTe3 with orbital-dependent intriguing effects and great potentials toward the spintronic devices.

SCI ; EI

英语

NI论文

其他

National Natural Science Foundation of China[11904174,61874060,61911530220,"U1932159"] ; Natural Science Foundation of Jiangsu Province["BK20190729","BK20181388","19KJA180007"] ; NUPTSF["NY219024","NY220203","NY217118"] ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China[19KJB510047] ; UK EPSRC[EP/S010246/1] ; leverhulme Trust[LTSRF1819/15/12] ; Royal Society[IEC/NSFC/181680]

Physics

Physics, Applied

WOS:000730999400017

AIP Publishing

20214511112949

Chromium compounds ; Electronic structure ; Ferromagnetism ; Ising model ; Magnetic anisotropy ; Magnetic semiconductors ; Magnets ; Photoelectron spectroscopy

Magnetism: Basic Concepts and Phenomena:701.2 ; Magnetic Materials:708.4 ; Semiconducting Materials:712.1 ; Physical Chemistry:801.4 ; Statistical Methods:922 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Atomic and Molecular Physics:931.3

PHYSICS

2-s2.0-85118441491

Scopus

1.New Energy Technology Engineering Laboratory of Jiangsu Provence,School of Science,Nanjing University of Posts and Telecommunications,Nanjing,210023,China
2.Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.National Laboratory of Solid State Microstructures,Collaborative Innovation Center of Advanced Microstructures,School of Electronic Science and Engineering,Nanjing University,Nanjing,210023,China
4.Key Laboratory of Flexible Electronics and Institute of Advanced Materials,Jiangsu National Synergetic Innovation Center for Advanced Materials,Nanjing Tech University,Nanjing,211816,China
5.Department of Electronic Engineering,Royal Holloway,University of London,Egham,Surrey,TW20 0EX,United Kingdom

Niu，Wei,Zhang，Xiaoqian,Wang，Wei,et al. Probing the atomic-scale ferromagnetism in van der Waals magnet CrSiTe3[J]. APPLIED PHYSICS LETTERS,2021,119(17).

Niu，Wei.,Zhang，Xiaoqian.,Wang，Wei.,Sun，Jiabao.,Xu，Yongbing.,...&Pu，Yong.(2021).Probing the atomic-scale ferromagnetism in van der Waals magnet CrSiTe3.APPLIED PHYSICS LETTERS,119(17).

Niu，Wei,et al."Probing the atomic-scale ferromagnetism in van der Waals magnet CrSiTe3".APPLIED PHYSICS LETTERS 119.17(2021).