86 citations · 139 across the 3 of their papers we have counts for
3 papers
cond-mat.mes-hall2024★ 6 cited
Nonreciprocal phonons in PT-symmetric antiferromagnet
Yafei Ren, Daniyar Saparov, Qian Niu
Phonon nonreciprocity, indicating different transport properties along opposite directions, has been observed in experiments under a magnetic field. We show that nonreciprocal acou…
cond-mat.mes-hall2021★ 47 cited
Lattice dynamics with molecular Berry curvature: chiral optical phonons
Daniyar Saparov, Bangguo Xiong, Yafei Ren +1
Under the Born-Oppenheimer approximation, the electronic ground state evolves adiabatically and can accumulate geometrical phases characterized by the molecular Berry curvature. In…
cond-mat.mes-hall2021★ 86 cited
Phonon Magnetic Moment from Electronic Topological Magnetization
Yafei Ren, Cong Xiao, Daniyar Saparov +1
The traditional theory of magnetic moments for chiral phonons is based on the picture of the circular motion of the Born effective charge, typically yielding a small fractional val…