Raman Evidence of Phase Transitions for FePS3 and FePSe3 under High Pressure

Huang，Qiaoling1,2; Pei，Shenghai3; Li，Binfeng2; Cheng，Hanyan2,4; Li，Gaomin5; Huang，Mingyuan2

2024-01-11

10.1021/acs.jpcc.3c05326

Journal of Physical Chemistry C   影响因子和分区

1932-7447

1932-7455

Two-dimensional (2D) magnetic materials are of great interest in fundamental condensed-matter physics research, as well as for potential applications in spintronics and device physics. In particular, FePX (X = S and Se) are antiferromagnetic materials with the Ising model. Here, we perform a low-frequency Raman study on FePX at room temperature to investigate the lattice, electronic, and magnetic behaviors under pressure, which gives clear evidence for the structural phase transitions and magnetic collapse. The Raman measurements resolve two critical pressures at 6.9 and 15.8 GPa for FePS and one critical pressure at 9.7 GPa for FePSe, which are characterized by the changes of Raman continuum and phonon modes. In addition, all Raman modes almost disappear above 16 GPa, indicating that the system turns into the metallic phase. Our Raman results are crucial for understanding high-pressure behavior in these materials and demonstrate a clear competition among the lattice vibration, spin−phonon coupling, magnetism, and electronic structure in 2D magnetic materials.

SCI ; EI

英语

其他

2-s2.0-85181838729

Scopus

1.Department of Physics,Harbin Institute of Technology,Harbin,150001,China
2.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
3.Institute of Fundamental and Frontier Sciences,University of Electronic Science and Technology of China,Chengdu,610054,China
4.Department of Physics,National University of Singapore,117551,Singapore
5.College of Integrated Circuits and Optoelectronic Chips,Shenzhen Technology University,Shenzhen,518118,China

Huang，Qiaoling,Pei，Shenghai,Li，Binfeng,et al. Raman Evidence of Phase Transitions for FePS3 and FePSe3 under High Pressure[J]. Journal of Physical Chemistry C,2024,128(1):177-183.

Huang，Qiaoling,Pei，Shenghai,Li，Binfeng,Cheng，Hanyan,Li，Gaomin,&Huang，Mingyuan.(2024).Raman Evidence of Phase Transitions for FePS3 and FePSe3 under High Pressure.Journal of Physical Chemistry C,128(1),177-183.

Huang，Qiaoling,et al."Raman Evidence of Phase Transitions for FePS3 and FePSe3 under High Pressure".Journal of Physical Chemistry C 128.1(2024):177-183.