84 citations · 559 across the 17 of their papers we have counts for
14 papers · 1 filter
Spin-phonon dispersion in magnetic materials
Mingqiang Gu, Y. H. Bai, G. P. Zhang +1
Microscopic coupling between the electron spin and the lattice vibration is responsible for an array of exotic properties from morphic effects in simple magnets to magnetodielectri…
Observation of magnetism induced topological edge state in antiferromagnetic topological insulator MnBi4Te7
HaoKe Xu, Mingqiang Gu, Fucong Fei +16
Breaking time reversal symmetry in a topological insulator may lead to quantum anomalous Hall effect and axion insulator phase. MnBi4Te7 is a recently discovered antiferromagnetic…
Role of hidden spin polarization in non-reciprocal transport of antiferromagnets
Weizhao Chen, Mingqiang Gu, Jiayu Li +2
The discovery of hidden spin polarization (HSP) in centrosymmetric nonmagnetic crystals, i.e., spatially distributed spin polarization originated from local symmetry breaking, has…
Ultrafast Suppression of the Ferroelectric Instability in KTaO
Viktor Krapivin, Mingqiang Gu, D. Hickox-Young +13
We use an x-ray free-electron laser to study the ultrafast lattice dynamics following above band-gap photoexcitation of the incipient ferroelectric potassium-tantalate, \kto. % We…
Crossover between bulk and interface photovoltaic mechanisms in ferroelectric vertical heterostructure
Amr Abdelsamie, Lu You, Le Wang +3
Bulk photovoltaic (BPVE) effect in crystals lacking inversion symmetry offers great potential for optoelectronic applications due to its unique properties such as above bandgap pho…
Correlation Between Spin and Orbital Dynamics During Laser-Induced Femtosecond Demagnetization
G. P. Zhang, Mingqiang Gu, Y. H. Bai +2
Spin and orbital angular momenta are two intrinsic properties of an electron and are responsible for the physics of a solid. How the spin and orbital evolve with respect to each ot…