TY - JOUR
T1 - Distinct magneto-Raman signatures of spin-flip phase transitions in CrI3
AU - McCreary, Amber
AU - Mai, Thuc T.
AU - Utermohlen, Franz G.
AU - Simpson, Jeffrey R.
AU - Garrity, Kevin F.
AU - Feng, Xiaozhou
AU - Shcherbakov, Dmitry
AU - Zhu, Yanglin
AU - Hu, Jin
AU - Weber, Daniel
AU - Watanabe, Kenji
AU - Taniguchi, Takashi
AU - Goldberger, Joshua E.
AU - Mao, Zhiqiang
AU - Lau, Chun Ning
AU - Lu, Yuanming
AU - Trivedi, Nandini
AU - Valdés Aguilar, Rolando
AU - Hight Walker, Angela R.
N1 - Funding Information:
A.M., T.T.M., and A.R.H.W. would like to acknowledge the National Institute of Standards and Technology (NIST)/National Research Council Postdoctoral Research Associateship Program and NIST-STRS (Scientific and Technical Research and Services) for funding. Work at The Ohio State University was supported by the Center for Emergent Materials, an NSF MRSEC under grant DMR-1420451. D.S. is supported by NSF/DMR 1807928. The single crystal growth efforts at Penn State are supported by the US Department of Energy under grant DE-SC0019068. D.W. gratefully acknowledges the financial support by the German Science Foundation DFG Research Fellowship (WE6480/1). Growth of hexagonal boron nitride crystals was supported by the Elemental Strategy Initiative conducted by the MEXT, Japan and the CREST(JPMJCR15F3), JST.
Publisher Copyright:
© 2020, This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply.
PY - 2020/12/1
Y1 - 2020/12/1
N2 - The discovery of 2-dimensional (2D) materials, such as CrI3, that retain magnetic ordering at monolayer thickness has resulted in a surge of both pure and applied research in 2D magnetism. Here, we report a magneto-Raman spectroscopy study on multilayered CrI3, focusing on two additional features in the spectra that appear below the magnetic ordering temperature and were previously assigned to high frequency magnons. Instead, we conclude these modes are actually zone-folded phonons. We observe a striking evolution of the Raman spectra with increasing magnetic field applied perpendicular to the atomic layers in which clear, sudden changes in intensities of the modes are attributed to the interlayer ordering changing from antiferromagnetic to ferromagnetic at a critical magnetic field. Our work highlights the sensitivity of the Raman modes to weak interlayer spin ordering in CrI3.
AB - The discovery of 2-dimensional (2D) materials, such as CrI3, that retain magnetic ordering at monolayer thickness has resulted in a surge of both pure and applied research in 2D magnetism. Here, we report a magneto-Raman spectroscopy study on multilayered CrI3, focusing on two additional features in the spectra that appear below the magnetic ordering temperature and were previously assigned to high frequency magnons. Instead, we conclude these modes are actually zone-folded phonons. We observe a striking evolution of the Raman spectra with increasing magnetic field applied perpendicular to the atomic layers in which clear, sudden changes in intensities of the modes are attributed to the interlayer ordering changing from antiferromagnetic to ferromagnetic at a critical magnetic field. Our work highlights the sensitivity of the Raman modes to weak interlayer spin ordering in CrI3.
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U2 - 10.1038/s41467-020-17320-3
DO - 10.1038/s41467-020-17320-3
M3 - Article
C2 - 32747673
AN - SCOPUS:85088922723
SN - 2041-1723
VL - 11
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 3879
ER -