54 citations · 62 across the 5 of their papers we have counts for
4 papers · 1 filter
Nonlinear optical quantum theory of demagnetization in L1 FePt and FePd
G. P. Zhang, Y. H. Bai, Thomas F. George
It is now well established that a laser pulse can demagnetize a ferromagnet. However, for a long time, it has not had an analytic theory because it falls into neither nonlinear opt…
Revisiting the matrix elements of the position operator in the crystal momentum representation
M. S. Si, G. P. Zhang
Fewer operators are more fundamental than the position operator in a crystal. But since it is not translationally invariant in crystal momentum representation (CMR), how to properl…
Strong ultrafast demagnetization due to the intraband transitions
Mitsuko Murakami, G. P. Zhang
Demagnetization in ferromagnetic transition metals driven by a femtosecond laser pulse is a fundamental problem in solid state physics, and its understanding is essential to the de…
All-optical spin switching under different spin configurations
G. P. Zhang, Mitsuko Murakami
We employ an atomic spin model and present a systematic investigation from a single spin to a large system of over a million spins. To have an efficient spin switching, the electro…