A Study of Phonon Modes of Magnetic Two-dimensional Materials using Optical Spectroscopy

Conference · Sat May 01 04:00:00 EDT 2021

OSTI ID:1817391

Kang, Jin Ho ^[1]; Cho, Yujin ^[1]; Liang, Liangbo ^[2]; Kong, Xiangru ^[2]; Ghosh, Subhajit ^[3]; Kargar, Fariborz ^[3]; Hu, Chaowei ^[1]; Balandin, Alexander ^[3]; Puretzky, Alexander ^[2]; Wei wong, Chee ^[1]

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1. University of California, Los Angeles
2. ORNL
3. University of California, Riverside

Raman spectroscopy measuring phonon vibration modes of MnBi2nTe3n+1 (n=1,2) showed abnormal changes in linewidths of MnBi2Te4. Out-of-plane force constant was also estimated via Davydov splitting of A1g mode (136 cm-1) of MnBi4Te7.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1817391
• Country of Publication: United States
• Language: English