@article{Cai2023,

title = {Spin\textendashPhonon Interactions and Anharmonic Lattice Dynamics in Fe3GeTe2},

author = {Qingan Cai and Yuemei Zhang and Diana Luong and Christopher A. Tulk and Boniface P.T. Fokwa and Chen Li},

url = {https://onlinelibrary.wiley.com/doi/10.1002/apxr.202200089},

doi = {10.1002/apxr.202200089},

year  = {2023},

date = {2023-03-24},

urldate = {2023-03-24},

journal = {Advanced Physics Research},

number = {2200089},

abstract = {Raman scattering is performed on Fe3GeTe2 (FGT) at temperatures from 8 to 300 K and under pressures from the ambient pressure to 9.43 GPa. Temperature-dependent and pressure-dependent Raman spectra are reported. The results reveal respective anomalous softening and moderate stiffening of the two Raman active modes as a result of the increase of pressure. The anomalous softening suggests anharmonic phonon dynamics and strong spin\textendashphonon coupling. Pressure-dependent density functional theory and phonon calculations are conducted and used to study the magnetic properties of FGT and assign the observed Raman modes E^2_2g and A^1_1g. The calculations proved the strong spin\textendashphonon coupling for the E^2_2g mode. In addition, a synergistic interplay of pressure-induced reduction of spin exchange interactions and spin\textendashorbit coupling effect accounts for the softening of the E^2_2g mode as pressure increases.},

keywords = {anharmonicity, DFT, high pressure, magnon-phonon, Raman, selenide},

pubstate = {published},

tppubtype = {article}

}

@article{Bansal:2016hd,

title = {Phonon anharmonicity and negative thermal expansion in SnSe},

author = {D Bansal and J Hong and Chen W Li and A F May and W Porter and M Y Hu and D L Abernathy and O Delaire},

url = {https://link.aps.org/doi/10.1103/PhysRevB.94.054307},

doi = {10.1103/PhysRevB.94.054307},

year  = {2016},

date = {2016-01-01},

journal = {Physical Review B},

volume = {94},

number = {5},

pages = {054307},

keywords = {neutron, NTE, phonon, selenide, thermodynamics, thermoelectric},

pubstate = {published},

tppubtype = {article}

}

@article{Li:2015gf,

title = {Orbitally driven giant phonon anharmonicity in~SnSe},

author = {Chen W Li and J Hong and A F May and D Bansal and S Chi and T Hong and G Ehlers and O Delaire},

url = {http://www.nature.com/doifinder/10.1038/nphys3492},

doi = {10.1038/nphys3492},

year  = {2015},

date = {2015-01-01},

journal = {Nature Physics},

volume = {11},

number = {12},

pages = {1063--1069},

keywords = {anharmonicity, neutron, selenide, thermoelectric},

pubstate = {published},

tppubtype = {article}

}