Raman scattering from magnetic excitations in CrI3 atomic layers

Zhipeng Ye; Eric Davis; Eric Davis; Eric Davis; Eric Davis; Rui He; Eric Davis; Eric Davis; Eric Davis; Eric Davis; Eric Davis; Eric Davis

Raman scattering from magnetic excitations in CrI3 atomic layers

ORAL

Abstract

Two-dimensional (2D) magnetism has been long sought-after and only very recently realized in atomic crystals of magnetic van der Waals materials. So far, a comprehensive understanding of the magnetic excitations in such 2D magnets remains missing. Here we report polarized micro-Raman spectroscopy studies on a 2D honeycomb ferromagnetic CrI3. Two sets of magnetic excitations at frequencies of 76 and 125 cm-1 are observed in CrI3 atomic layers down to the monolayer limit. By tracking the thickness dependence of both modes from magnetic excitations, we reveal that both are surface modes. Our results demonstrate intriguing spin dynamics and intricate interplay with fluctuations in the 2D limit, thus opening up opportunities for spintronics applications incorporating 2D magnets.

Oct. 25, 2019, 3:06 PM – Oct. 25, 2019, 3:18 PM

Authors

Zhipeng Ye

Texas Tech Univ
Eric Davis

University of Texas at Arlington, Sultan Qaboos University, UTA HEP group, Department of Integrated Bio \& Nano Systems, University of Houston, Houston, TX 77204, USA, Department of Electrical and Computer Engineering, Nano Tech Center, Texas Tech University, University of Michigan, University of Waerloo, Canada, Texas Tech University, Dept of Mechanical Eng, TTU; Dept. of Physics and Astronomy, TTU, Dept of Cell Biology and Biochemistry, TTU Health Sci Ctr, Dept of Physics and Astronomy, TTU, Dept of Mechanical Engineering, TTU, Dept of Physics and Astronomy, TTU; Sch of Health and Sci, Purdue Univ, Dept of Mathematical and Systems Engineering, Shizuoka Univ, Department of Physics, University of Texas at Dallas, Richardson, TX 75080, Department of Physics, University of Texas at Dallas, Richardson, TX 75080., LeTourneau University, None, University of Waterloo, Canada, Texas Tech Univ, Trinity University, the University of Texas at Dallas, Texas Tech University, Lubbock, TX, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada, University of Dallas, Liverpool John Moores University, University Of Houston, Biolog Department, TCU, Home Schooled high school student, Los Alamos National Laboratory
Eric Davis

University of Texas at Arlington, Sultan Qaboos University, UTA HEP group, Department of Integrated Bio \& Nano Systems, University of Houston, Houston, TX 77204, USA, Department of Electrical and Computer Engineering, Nano Tech Center, Texas Tech University, University of Michigan, University of Waerloo, Canada, Texas Tech University, Dept of Mechanical Eng, TTU; Dept. of Physics and Astronomy, TTU, Dept of Cell Biology and Biochemistry, TTU Health Sci Ctr, Dept of Physics and Astronomy, TTU, Dept of Mechanical Engineering, TTU, Dept of Physics and Astronomy, TTU; Sch of Health and Sci, Purdue Univ, Dept of Mathematical and Systems Engineering, Shizuoka Univ, Department of Physics, University of Texas at Dallas, Richardson, TX 75080, Department of Physics, University of Texas at Dallas, Richardson, TX 75080., LeTourneau University, None, University of Waterloo, Canada, Texas Tech Univ, Trinity University, the University of Texas at Dallas, Texas Tech University, Lubbock, TX, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada, University of Dallas, Liverpool John Moores University, University Of Houston, Biolog Department, TCU, Home Schooled high school student, Los Alamos National Laboratory
Eric Davis

University of Texas at Arlington, Sultan Qaboos University, UTA HEP group, Department of Integrated Bio \& Nano Systems, University of Houston, Houston, TX 77204, USA, Department of Electrical and Computer Engineering, Nano Tech Center, Texas Tech University, University of Michigan, University of Waerloo, Canada, Texas Tech University, Dept of Mechanical Eng, TTU; Dept. of Physics and Astronomy, TTU, Dept of Cell Biology and Biochemistry, TTU Health Sci Ctr, Dept of Physics and Astronomy, TTU, Dept of Mechanical Engineering, TTU, Dept of Physics and Astronomy, TTU; Sch of Health and Sci, Purdue Univ, Dept of Mathematical and Systems Engineering, Shizuoka Univ, Department of Physics, University of Texas at Dallas, Richardson, TX 75080, Department of Physics, University of Texas at Dallas, Richardson, TX 75080., LeTourneau University, None, University of Waterloo, Canada, Texas Tech Univ, Trinity University, the University of Texas at Dallas, Texas Tech University, Lubbock, TX, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada, University of Dallas, Liverpool John Moores University, University Of Houston, Biolog Department, TCU, Home Schooled high school student, Los Alamos National Laboratory
Eric Davis

University of Texas at Arlington, Sultan Qaboos University, UTA HEP group, Department of Integrated Bio \& Nano Systems, University of Houston, Houston, TX 77204, USA, Department of Electrical and Computer Engineering, Nano Tech Center, Texas Tech University, University of Michigan, University of Waerloo, Canada, Texas Tech University, Dept of Mechanical Eng, TTU; Dept. of Physics and Astronomy, TTU, Dept of Cell Biology and Biochemistry, TTU Health Sci Ctr, Dept of Physics and Astronomy, TTU, Dept of Mechanical Engineering, TTU, Dept of Physics and Astronomy, TTU; Sch of Health and Sci, Purdue Univ, Dept of Mathematical and Systems Engineering, Shizuoka Univ, Department of Physics, University of Texas at Dallas, Richardson, TX 75080, Department of Physics, University of Texas at Dallas, Richardson, TX 75080., LeTourneau University, None, University of Waterloo, Canada, Texas Tech Univ, Trinity University, the University of Texas at Dallas, Texas Tech University, Lubbock, TX, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada, University of Dallas, Liverpool John Moores University, University Of Houston, Biolog Department, TCU, Home Schooled high school student, Los Alamos National Laboratory
Rui He

Texas Tech Univ
Eric Davis

University of Texas at Arlington, Sultan Qaboos University, UTA HEP group, Department of Integrated Bio \& Nano Systems, University of Houston, Houston, TX 77204, USA, Department of Electrical and Computer Engineering, Nano Tech Center, Texas Tech University, University of Michigan, University of Waerloo, Canada, Texas Tech University, Dept of Mechanical Eng, TTU; Dept. of Physics and Astronomy, TTU, Dept of Cell Biology and Biochemistry, TTU Health Sci Ctr, Dept of Physics and Astronomy, TTU, Dept of Mechanical Engineering, TTU, Dept of Physics and Astronomy, TTU; Sch of Health and Sci, Purdue Univ, Dept of Mathematical and Systems Engineering, Shizuoka Univ, Department of Physics, University of Texas at Dallas, Richardson, TX 75080, Department of Physics, University of Texas at Dallas, Richardson, TX 75080., LeTourneau University, None, University of Waterloo, Canada, Texas Tech Univ, Trinity University, the University of Texas at Dallas, Texas Tech University, Lubbock, TX, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada, University of Dallas, Liverpool John Moores University, University Of Houston, Biolog Department, TCU, Home Schooled high school student, Los Alamos National Laboratory
Eric Davis

University of Texas at Arlington, Sultan Qaboos University, UTA HEP group, Department of Integrated Bio \& Nano Systems, University of Houston, Houston, TX 77204, USA, Department of Electrical and Computer Engineering, Nano Tech Center, Texas Tech University, University of Michigan, University of Waerloo, Canada, Texas Tech University, Dept of Mechanical Eng, TTU; Dept. of Physics and Astronomy, TTU, Dept of Cell Biology and Biochemistry, TTU Health Sci Ctr, Dept of Physics and Astronomy, TTU, Dept of Mechanical Engineering, TTU, Dept of Physics and Astronomy, TTU; Sch of Health and Sci, Purdue Univ, Dept of Mathematical and Systems Engineering, Shizuoka Univ, Department of Physics, University of Texas at Dallas, Richardson, TX 75080, Department of Physics, University of Texas at Dallas, Richardson, TX 75080., LeTourneau University, None, University of Waterloo, Canada, Texas Tech Univ, Trinity University, the University of Texas at Dallas, Texas Tech University, Lubbock, TX, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada, University of Dallas, Liverpool John Moores University, University Of Houston, Biolog Department, TCU, Home Schooled high school student, Los Alamos National Laboratory
Eric Davis

University of Texas at Arlington, Sultan Qaboos University, UTA HEP group, Department of Integrated Bio \& Nano Systems, University of Houston, Houston, TX 77204, USA, Department of Electrical and Computer Engineering, Nano Tech Center, Texas Tech University, University of Michigan, University of Waerloo, Canada, Texas Tech University, Dept of Mechanical Eng, TTU; Dept. of Physics and Astronomy, TTU, Dept of Cell Biology and Biochemistry, TTU Health Sci Ctr, Dept of Physics and Astronomy, TTU, Dept of Mechanical Engineering, TTU, Dept of Physics and Astronomy, TTU; Sch of Health and Sci, Purdue Univ, Dept of Mathematical and Systems Engineering, Shizuoka Univ, Department of Physics, University of Texas at Dallas, Richardson, TX 75080, Department of Physics, University of Texas at Dallas, Richardson, TX 75080., LeTourneau University, None, University of Waterloo, Canada, Texas Tech Univ, Trinity University, the University of Texas at Dallas, Texas Tech University, Lubbock, TX, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada, University of Dallas, Liverpool John Moores University, University Of Houston, Biolog Department, TCU, Home Schooled high school student, Los Alamos National Laboratory
Eric Davis

University of Texas at Arlington, Sultan Qaboos University, UTA HEP group, Department of Integrated Bio \& Nano Systems, University of Houston, Houston, TX 77204, USA, Department of Electrical and Computer Engineering, Nano Tech Center, Texas Tech University, University of Michigan, University of Waerloo, Canada, Texas Tech University, Dept of Mechanical Eng, TTU; Dept. of Physics and Astronomy, TTU, Dept of Cell Biology and Biochemistry, TTU Health Sci Ctr, Dept of Physics and Astronomy, TTU, Dept of Mechanical Engineering, TTU, Dept of Physics and Astronomy, TTU; Sch of Health and Sci, Purdue Univ, Dept of Mathematical and Systems Engineering, Shizuoka Univ, Department of Physics, University of Texas at Dallas, Richardson, TX 75080, Department of Physics, University of Texas at Dallas, Richardson, TX 75080., LeTourneau University, None, University of Waterloo, Canada, Texas Tech Univ, Trinity University, the University of Texas at Dallas, Texas Tech University, Lubbock, TX, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada, University of Dallas, Liverpool John Moores University, University Of Houston, Biolog Department, TCU, Home Schooled high school student, Los Alamos National Laboratory
Eric Davis

University of Texas at Arlington, Sultan Qaboos University, UTA HEP group, Department of Integrated Bio \& Nano Systems, University of Houston, Houston, TX 77204, USA, Department of Electrical and Computer Engineering, Nano Tech Center, Texas Tech University, University of Michigan, University of Waerloo, Canada, Texas Tech University, Dept of Mechanical Eng, TTU; Dept. of Physics and Astronomy, TTU, Dept of Cell Biology and Biochemistry, TTU Health Sci Ctr, Dept of Physics and Astronomy, TTU, Dept of Mechanical Engineering, TTU, Dept of Physics and Astronomy, TTU; Sch of Health and Sci, Purdue Univ, Dept of Mathematical and Systems Engineering, Shizuoka Univ, Department of Physics, University of Texas at Dallas, Richardson, TX 75080, Department of Physics, University of Texas at Dallas, Richardson, TX 75080., LeTourneau University, None, University of Waterloo, Canada, Texas Tech Univ, Trinity University, the University of Texas at Dallas, Texas Tech University, Lubbock, TX, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada, University of Dallas, Liverpool John Moores University, University Of Houston, Biolog Department, TCU, Home Schooled high school student, Los Alamos National Laboratory
Eric Davis

University of Texas at Arlington, Sultan Qaboos University, UTA HEP group, Department of Integrated Bio \& Nano Systems, University of Houston, Houston, TX 77204, USA, Department of Electrical and Computer Engineering, Nano Tech Center, Texas Tech University, University of Michigan, University of Waerloo, Canada, Texas Tech University, Dept of Mechanical Eng, TTU; Dept. of Physics and Astronomy, TTU, Dept of Cell Biology and Biochemistry, TTU Health Sci Ctr, Dept of Physics and Astronomy, TTU, Dept of Mechanical Engineering, TTU, Dept of Physics and Astronomy, TTU; Sch of Health and Sci, Purdue Univ, Dept of Mathematical and Systems Engineering, Shizuoka Univ, Department of Physics, University of Texas at Dallas, Richardson, TX 75080, Department of Physics, University of Texas at Dallas, Richardson, TX 75080., LeTourneau University, None, University of Waterloo, Canada, Texas Tech Univ, Trinity University, the University of Texas at Dallas, Texas Tech University, Lubbock, TX, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada, University of Dallas, Liverpool John Moores University, University Of Houston, Biolog Department, TCU, Home Schooled high school student, Los Alamos National Laboratory