36 citations · 128 across the 12 of their papers we have counts for
12 papers
Gateway to all-optical spin switching in Heusler ferrimagnets: Pancharatnam-Berry tensor and magnetic moment ratio
G. P. Zhang, Y. Q. Liu, M. S. Si +4
All-optical spin switching (AOS) is a new phenomenon found in a small group of magnetic media, where a single laser pulse can switch spins from one direction to another, without as…
Laser-induced forces on atoms during ultrafast demagnetization
G. P. Zhang, Y. H. Bai
Laser-induced femtosecond demagnetization has attracted a broad attention as a possible candidate for information storage technology. However, whether or not lattice vibration dire…
First-principles insights into all-optical spin switching in the half-metallic Heusler ferrimagnet MnRuGa
G. P. Zhang, Y. H. Bai, M. S. Si +1
All-optical spin switching (AOS) represents a new frontier in magnetic storage technology -- spin manipulation without a magnetic field, -- but its underlying working principle is…
Optically- and thermally-driven huge lattice orbital and spin angular momenta from spinning fullerenes
G. P. Zhang, Y. H. Bai, Thomas F. George
Lattice vibration in solids may carry angular momentum. But unlike the intrinsic spin of electrons, the lattice vibration is rarely rotational. To induce angular momentum, one need…
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…
Magic high-order harmonics from a quasi-one-dimensional hexagonal solid
G. P. Zhang, Y. H. Bai
High-order harmonic generation (HHG) from atoms is a coherent light source that opens up attosecond physics, but it is the application of HHG to solids that brings much of exciteme…
Manifestation of intra-atomic 5d6s-4f exchange coupling in photoexcited gadolinium
G. P. Zhang, T. Jenkins, M. Bennett +1
Intra-atomic exchange couplings (IEC) between and electrons are ubiquitous in rare-earth metals and play a critical role in spin dynamics. However, detecting them in re…
Ultrafast reduction of exchange splitting in ferromagnetic nickel
G. P. Zhang, Y. H. Bai, Thomas F. George
A decade ago Rhie \et (Phys. Rev. Lett. {\bf 90}, 247201 (2003)) reported that when ferromagnetic nickel is subject to an intense ultrashort laser pulse, its exchange splitting is…
Superintermolecular orbitals in the C/pentacene complex
G. P. Zhang, A. Gardner, T. Latta +2
We report a group of unusually big molecular orbitals in the C60/pentacene complex. Our first-principles density functional calculation shows that these orbitals are very delocaliz…
All-optical spin switching: A new frontier in femtomagnetism -- A short review and a simple theory
G. P. Zhang, T. Latta, Z. Babyak +2
Using an ultrafast laser pulse to manipulate the spin degree of freedom has broad technological appeal. It allows one to control the spin dynamics on a femtosecond time scale. The…
Switching ferromagnetic spins by an ultrafast laser pulse: Emergence of giant optical spin-orbit torque
G. P. Zhang, Y. H. Bai, T. F. George
Faster magnetic recording technology is indispensable to massive data storage and big data sciences. {All-optical spin switching offers a possible solution}, but at present it is l…
A new and simple model for magneto-optics uncovers an unexpected spin switching
G. P. Zhang, Y. H. Bai, Thomas F. George
In magneto-optics the spin angular momentum of a sample is indirectly probed by the rotation angle and ellipticity, which are mainly determined by the off-diagonal susceptibi…